https://ploum.net/2023-06-23-how-to-kill-decentralised-networks.html
Many of us do not trust Facebook and anything it is associated with or swallows up.
EDIT:
"Instagram head Adam Mosseri said "
““Soon, you’ll be able to follow and interact with people on other fediverse platforms, such as Mastodon. They can also find people on Threads using full usernames, such as @mosseri@threads.net.””
“We’re committed to building support for ActivityPub, the protocol behind Mastodon, into this app. We weren’t able to finish it for launch given a number of complications that come along with a decentralized network, but it’s coming,” he said.
“If you’re wondering why this matters, here’s a reason: you may one day end up leaving Threads, or, hopefully not, end up de-platformed. If that ever happens, you should be able to take your audience with you to another server. Being open can enable that.”
I don’t see what people are afraid of. Lemmy.world can do what it wishes, but I honestly don’t see where the fear comes in. At the very least just mark it invisible. Let those other users see what other alternatives are out there.
What problem are you trying to fix by blocking them before even seeing what it’s like (without using some vague notions)?
Will it even natively federate with this format? Just as Mastodon doesn’t default to trying to display posts in its feed and Kbin doesn’t by default show Mastodon or PixelFed, etc. You might be worrying over nothing.
Your server federated with Mastodon instances. I’m assuming you aren’t inundated with Mastodon posts.
As long as lemmy.world blocks it, it’s not an issue - for us anyway, I hope. Though meta are devious - you need to be watchful.