I think it’s pretty safe to say that the majority of us are here to avoid another corporate takeover of our preferred platforms. It would seem to me to be a tad irresponsible to allow Facebook into our space with open arms, allowing them to hoover up our data. I would love to keep using Lemmy.world, but will happily change instances if need be, and I feel many share that sentiment.
Federation can also be reverted at any times if they misbehave. Why should we block them in advance?
Track record.
Historical precedent and #2/#3 on my list above make the case for erring on the side of caution. That and we’ve got far more to lose than to gain.