X is the only place to learn about the latest developments on AI coding. And yes, you do have to sift through a lot of idiots on there and a lot of scams and bots, but the point remains.
As a Reddit user - Reddit's tech talk quality is quite lower than X. Don't know about TikTok, haven't used it, I imagine it's the same as Youtube.
X is a dumpster fire for sure, but there's still quality people on there that push the latest on what's happening. It's where the tech companies first announce things and it's where the discussion around those gets picked up.