Largely agree with people saying "you need to get offline more often for more nuance in leftist political discussions" but I do wonder if people underestimate how radical a lot of irl spaces have become. Many takes I consider "overly online" were fairly common in California's Bay Area and seemed common in Seattle as well.
I do wonder if its less a "the online left is an echo chamber" and more of "the online left drinks a lot of the US West Coast's kool-aid, which is a weird echo chamber revolving around California's, Portland's, and Seattle's unique political situations in the 2010s". Or- similarly- I think online leftist political discourse and US West Coast political frustration synergistically overlap.
This is a bit of an IMO, so take it with a grain of salt- its hard to overstate how openly hostile a city like San Francisco became to anyone in its vicinity, and how that dripped toxicity into many vulnerable groups. Many of these cities were stomping grounds for a nouveau rich class which was sometimes not traditionally white and sometimes not even American, but cruelly was overwhelmingly non-black. The Democratic leadership in these cities were masters of picking a good, diverse PR team then caving to moneyed interests. Fucking everyone was getting priced out, leading to a lot of pointed fingers of "whose gentrifying what" and "who belongs where." There's a metaphorical seat at the table for vulnerable groups to get jobs, cheap housing, etc- but those seats are numbered, leading to "whose deserves this the most" style in-fighting.
Can't say how these have changed recently- no longer in the US and been a bit of a hermit since COVID.
Anyway- its hard not to see a lot of online discourse as extensions of these weird US West Coast political dynamics. "Who is the most oppressed" matters more in a city where a left-presenting centrist will throw a limited amount of cash & attention at a limited number of vulnerable groups. The deep hatred of democrats to a point of nigh irrationality makes sense in these democrat ideological strongholds where democrats promise everything and deliver nothing. The moral grandeur and absolutism seems plausible with the backdrop of nouveau rich claiming they've "solved the US's problems" with some bizarre organization structure or charismatic leader.