I personally am quite against it. I joined Lemmy to stay away from the toxicity on Meta's platforms. I don't want any corporate bodies on the fediverse either and possibly doing to the fediverse what Google did to XMPP
A lot of people are using the same user handle accross platforms. That's an easy way to deanonimize people's data, and that's what is Meta aiming for (besides potential EEE tactics).