It really started to die in 2022-2023, but the final nails are definitely being put in this year.
So many "open systems" now completely hidden if you don't have an account now. How long until Reddit doesn't even let you read without an account?
Of note - I killed my Reddit account during the whole Apollo API thing a few years ago. I even did the "gibberish your existing content" then "delete your old content", finally deleting my account. I did this in the week before the TOS changed.
I went back the next week - all my old content had been restored, just without my user name. Of course, without an active account, I couldn't open a support ticket demanding they delete my content. 😡