I doubt it's just other social media platforms that made this place so quiet. That was one, but another is that many people who used to be exciting about what Apple is doing, just aren't anymore. There were several reasonably vocal users here who noted as such before drifting away from the forum. Others ended up being banned because they couldn't have mature discussions. It was really a combination of all those things that motivated people to move on.
I for one still buy Apple stuff, but only because I'm kind of locked into the ecosystem. I'm not excited about anything they are doing now days, and don't find much to talk about other than, ho humming another boring update cycle.