You have to factor in what he does with the money saved by trading Betts. That, in a sense, is part of the trade.
I think most Sox fans would understand that- just like they did when we traded AGon, although that involved dumping the much fan-hated CC.
We won a ring in 2013, clearly as a result of the money saved on that deal and how Ben spent it wisely.
Sure, we'll likely lose some fans by trading Betts, but if we present the trade in the right way, by announcing we will go all out to re-sign him in 2021, then maybe it won't have the negative impact many seem to think it might have.
Plus, if Bloom spends Betts's money wisely, maybe we'll end up going farther than many fans expect, and the "lost" fans will come back quickly.
As you know, I'm all for bringing Betts back, and it seems like I'm in a minority on this site, so I guess that means people are okay with losing fans from 2021-2030 but not 2020 alone.