@sab I think the concern is more about tens/hundreds of thousands of toxic bros from Threads jumping into conversations on the fedi. We'll know enough not to follow them, but they'll be able to find us.
The fedi already has every kind of hate and -phobia and -ism present, of course, but if the wrong people from Threads get involved, that could go up by an order of magnitude and push us past a tipping point where our network of volunteer moderators just can't keep up.