You don't need a Cohost Account to view a Chost.
Trying to look up anything about the furry convention I'm going to next month after noticing the main page doesn't have much schedule info posted yet. The con has a bunch of social media: site formerly known as twitter, facebook, and instagram. As I don't have any active accounts I'm currently using for any of these and really don't want to considering how horrible my experiences and/or impressions of each are: I can't read any of the posts sharing information about the event. Big social media sites really make it as difficult as possible to use the internet without participating in them.
Log out of Cohost, click a link to my own chost I shared elsewhere with friends and, oh hey, I can read it; I'm only unable to comment. I can check my other posts on my feed and even net search stuff for site:cohost.org + whatever other search parameters I'd like. It's even possible to view 18+ flagged posts without a cohost account; with appropriate considerations of needing to confirm "I am 18+" per post and such posts also hidden behind 'this post is 18+' when embedded off site.
I know the arguments for numbers, the one thing Cohost doesn't have that all the other platforms do, particularly as a means to appeal to business clients; but barring that need I'm less and less seeing how Cohost is all that bad for promoting stuff like art or indie games which seem to be thriving fairly well here. Thinking it really could do the same for things like events and orgs especially since I see so many just use social media for a site news feed which you need people to be able to just click through to the important info. Requiring people be signed up for a site that has nothing to do with the group they want to learn about just seems counterproductive to that need.
Everything else is a walled garden in the worst possible way for creators.
