It's hard to know. I thought Ben deserved at least one more year, and I felt he was about to trade some prospects and shift gears.
If Bloom gets fired, this winter, I think it would be about trying to quiet the noisy/bitching fans that seem to have gotten quite deafening, of late. I'm not sure how much he cares about them, but he does care about attendance and NESN viewership. If he doesn't think Bloom is capable of spending wisely, this winter and building a team fans will recognize as being exciting and competitive, maybe he hires someone to replace him. Someone with a known track record of signing the right higher ticket FAs. This is just my opinion, but I do not think he'd be looking for the next "empty out most of the farm" type GM.
I, too, think Bloom returns through the winter, at least. (I'd say 98% chance.) If we flounder, next season, injuries or not, he might be gone mid-season or next winter, but maybe Henry has bought into some sort of 5 year plan, and though disappointed by 2022, the excitement from 2021 balanced 2022 out, and the state of the farm and future budget is where JH wants it to be.