There are basically two irreconcilable camps in the Threads debate here.
Camp 1, understandably, wants nothing to do with Meta and view them as an existential threat to the Fediverse for plenty of well-precedented reasons.
Camp 2, also understandably, sees potential in connecting a managed platform that appeals to entities like news outlets and other services to the Fediverse, enabling us to access that information without requiring an account on a Meta-owned platform.
Camp 1 will not cede ground because they view the issue as existential.
Camp 2 will, I dunno, deal with it or move to a server where they can see what they want to see?
But given the scale of Threads already, widespread blocking of it will create a pretty noticeably weird gap in the federation graph, and make onboarding for new potential Fedi users even more confusing. That part, by itself, kinda sucks.