In case anybody wants to know, Cohost got a mention in a fairly-mainstream article on "Twitter alternatives," which I find inaccurate, but I neither write news articles nor have ownership for the site, so... 🤷
I don't know what their readership looks like (other than me, occasionally), so I don't know whether "early adopters could help shape it into becoming the social media site they’ve been hoping for" is a threat or just idle musing...