This is the actual URL for your community. Caps and spaces are not allowed. Also there seem to be some other weird restrictions, maybe on length. Try a couple of different things related to your topic and see what goes through.
It doesn't seem like it's actively collapsing but there is definitely a slow decline in its early stages. There's a noticeable uptick in the number of bots and they aren't being caught and deleted as quickly. There's also a lot of subtle protest going on such as r/DIY making their automod be as obnoxious as possible. It's still working and there's still content but there's a noticeable pallor over the place.
I think you misunderstood, I'm not talking about just hanging out on your server. It's fairly easy to search for something and pull up posts from another server without realizing it (especially with the influx of new users fleeing Reddit who may not understand the instance system). I'm talking about a situation where someone pulls up content from Threads without realizing it and comments on that.
I'm no cybersecurity expert but there is definitely more info involved with posting to Threads. I might be able to get a little info on you from looking at your comment but I can't tell things like your IP address. If you commented to my server though I absolutely could.
I don't think this is just to spite Meta, they're known for tracking everything under the sun and there are serious security concerns about what info they may acquire if you unwittingly interact with a post on Threads from another server.
Ah yes, Lewis & Clark, famous explorers of Maryland