I agree, the API change was the last nail in the coffin, honestly. Reddit was always bad for several reasons, but it always had some availability of smart people that placed it alongside StackExchange and Hacker News. But 2022 and 2023 really saw a mass exodus of expertise from Reddit (and Twitter, etc.)
My account on Reddit, and so as I was the founder also the sub r/AmazonRedshift, was in Sep 2023 banned by an automated system.
The sub was working normally, I posted about the Amazon Redshift Serverless PDF, and then Reddit began behaving oddly.
After some investigation, and some guesswork, I concluded my account had been silently shadow-banned, and the sub banned (and then shortly after, deleted).
Two years of posts and the sub disappeared, instantly, abruptly, without warning, reason, appeal process or notification, and Reddit was trying by shadowbanning to lead me into thinking my account was still active.
I used a utility to scramble (you can't delete) all the posts I'd ever made to Reddit, and closed my account.
(There's a bit of a happy ending - about a year later someone who was doing work with Reddit and had an archive of all my poss sent them to me, as a thank you. I processed the JSON and put them up on my Redshift site.)
I like how you both responded to GP's roast of "I agree" comments by saying "I agree". Maybe that was intentional.
Anyway, I agree. I used Reddit fairly regularly before the API change, though I was already starting to get disenfranchised by the political hive mind by that point. The death of FOSS third party clients that made the platform bearable to use was the straw that broke the camel's back, for me. I've completely left it behind since.
Lots of smart people left to Mastodons, at least.