Long time user, recently scrambled my password and gave up on HN entirely.
It's not just the AI thing - though that hasn't helped - there's been a real turn in the community. The most generous take I can offer is that a lot of people flooded into tech for the money in the last ten years, and now that the money is tighter all these people are panicking and trying to cling to anything that looks like a winning lottery ticket.
Unfortunately that means that for those of us who actually like cool tech, the space is inundated with get rich quick trash and wishcasting. So so much of it on HN right now.
I also think there's been a subtle change in the quality of the moderation. Before, stories were clearly gently spiked or promoted to encourage interesting and novel things to drift to the top every once in a while, and now that basically never seems to happen. A story about a cool new lisp would somehow appear in front of a story about a new version of React, even though it's kind of obvious it couldn't match the level of upvotes for the latter. Now it's all the latter. It's like a very smart thumb has been lifted off the scales and the community is poorer for it.
As I say, I eventually just left. HN currently detracts from my enjoyment of my day more than it adds. I hope it finds its way back over time.