Do you think Meta's Threads app will be beneficial or detrimental to the Fediverse?
Personally I believe that it'll make people associate the Fediverse with Threads, which is not a good thing. Edit: It'll replace their definition of the Fediverse, with Threads, and people may widely forget about Mastodon, Lemmy, Kbin etc.
I look forward to it. Granted, I wonder at this point if ActivityPub is still on the roadmap given the user count and communication already happening. Their goal is to hurt Twitter, and that's starting to happen already. Why should they seek out conflict when they're winning?
I'm following Midwest.social on mastodon, which is an instance of Lemmy, not mastodon. I give it a 6/10. It's far from ideal, but you'll basically come a cross comment chains in your feed. It's much harder to take in the WHOLE discussion and kind of gage the general sentiment of people on the platform, but it is functional and easy enough to leave your own comment, as well as keep track of specific users replying back and forth. I could definitely see people using a more Twitter-like app as a reddit replacement now that I've test driven it myself.