What's really interesting to me about this oral history is that if you remove all the years I'd read it and say "Ah, yes, I too was on tumblr during these events and I remember all of it" except... all of the years you cite are ~4 years later than when I'd peg the events as having occurred. And I appear to be ~4 years older than you.
There's an interesting dynamic on social media that is following-specific-people-based rather than everyone-on-one-forum based where you get the sense that "the whole community" is having one big shared conversation, but it's actually entirely within a bubble of people who follow certain circles in common, and a lot of demographic similarities will create these sorts of "discourse cohorts."
I was on tumblr from 2009 to 2016. There was already discussions of asexuality, microlabels, aphobia, and "ace discourse" occurring back then. Around 2010 to 2013 I think we had a sort of peak-normal of things like split attraction theory, and then in 2014-2015 was when I witnessed that same backlash against things like the split-attraction model and the intensity of "ace discourse" followed by a similar detente type period in 2016.
What's notable to me is that, I think like most people, I mostly followed people who were my age or +4 years older than me. I did not generally follow people who were younger than me by more than a couple years. The intervals of meaningful eras being multiples of 4 feels significant to me because that is the length of a segment of schooling in American education. High schoolers, college students, and recent college grads. 4. 4. 4. It seems like we witnessed similar events happen among different people in different cohorts.
I experienced my teenage and start-of-college years as peak cake and dragons cheery everyone is valid acceptance times, mid-college as peak vitriolic only lesbians are valid toxic discourse, and post-college as the jaded exhausted detente where everyone was just kinda done talking about it. You are ~four years younger than me. The period of time I experienced as peak vitriolic discourse, when I was in college, seems to be when you had experienced things as relatively accepting. When I was done with college and everyone seemed to be chilling out, you witnessed peak vitriolic discourse while in mid-college. When you finished college, everyone seemed to be jaded and burnt out and done talking about it without really ever resolving the matter.
My own personal path from "how could a cishet ace be queer" to "eh i dont see why it matters to argue about these hypothetical cishet aces who never show up to anything anyway" to "I mean... they do seem to be queer... the ones that I have met" to "I am making out with The Dreaded Cishet Asexual Man right now and it's fantastic that we aren't going to have to have sex after oh shit I think I might be ace" roughly just corresponds to getting older. I think as people get further and further away from college the less they care about Identity Discourse in general. They become tired and jaded and start seeing people four years younger than them (or more) having the exact same arguments over and over again in a cycle. TikTok 20 year olds seem to frequently be re-hashing arguments I was having ten years ago on tumblr. My thought is always "didn't we all already come to a shared conclusion on the correct answer to this in 2014?" and then I remember that these people were 10 years old when that happened and so just weren't there. None of the internet discourse gets translated to some sort of shared communal history that they get caught up on. Even now when you look at a lot of twitter/bluesky discourse it seems to be a refrain of the Lesbian Sex Wars of the 1970s, which also consisted of young 20-somethings arguing viciously and then many of them, in their older years, reconciling and concluding they didn't need to be so vitriolic to each other.
Maybe it's ironic to say all this after I wrote a 500,000 word coming out essay in the form of philosophical discourse about the definitions of identity labels but it does seem like this oral history is less of a chronologically-specific history of a universal shared reality and more of... a description of an eternally repeating hell chamber that everyone is caught getting put through over and over again in the social media terror cyclone as new young people discover their own identities, discover the thrill of harassing each other over their differences, and then get burnt out and stop caring. I'm not sure how one makes the cycle stop traumatizing every young queer person, but it does give me hope that, among the spaces I spend time in now in my 30s, nobody seems to be invested in how other people identity and if it is "correct" or "valid" or "appropriating from lesbians" (really don't know why everyone is so often concerned about people stealing words from lesbians). Maybe we just need a way to speedrun getting 18 year olds to that point of acceptance before they can be exposed to the Liberal Arts.