Same in my experience. The tech scene, as with Twitter, has changed the most -- all of the tech subs I used to follow have slowed down
considerably in the last couple of weeks. I suspect that we'll see another big hit July 1 when the API dies, and maybe a couple of days before when the big third-party apps kill their API keys.
Meme subs will rage on as always, but I honestly wonder how much of those are majority bot-generated content at this point. In the last couple of years there's already been a serious uptick in recycled content from prior years, same or similar subs, to harvest upvotes on accounts.
Much like Twitter, I suspect certain communities will linger on. Local city subreddits, cesspools that they are, seem to be going strong still. But I don't consider that much of a loss, it's basically a (slightly) better Nextdoor.
I suspect third-party apps make up a huge portion of power user interactions, simply because the alternatives on mobile are really crappy. I guess we'll see for sure on the 30th.