I'm not super optimistic about the changes, but getting rid of like/rt counts is not even close to a "tiny iterative ux change". Those counts are absolutely central to the way users interact with and understand conversation on the site. Getting rid of them completely is a massive sea change in the conversational dynamics.
> Those counts are absolutely central to the way users interact with and understand conversation on the site.
Maybe so, but the numbers won't be hidden to the algorithm, which ultimately decides which retweets and "high-engagement" posts to show you on the timeline. I would think that has a much bigger influence on the conversation. You won't reply to something if it never makes it to your feed in the first place.
Seriously, we have nearly 20 years of evidence at this point showing that, if you associate something with users’ online identities that looks like a score, they will treat it as such and start looking for ways to outscore everyone else.