I think the biggest issue with Bloom was, while he had a plan and stuck to it, he basically made the entire Red Sox organization and brand irrelevant. I mean, this is just my experience recently, but me and some friends were walking by a bar and noticed the Sox playing on a TV, and while I knew who they were playing my friends were like, "wait they are playing the Yankees today?". 5+ years ago we'd look at BOS-NYY as some marquee, cant-miss game. Nowadays, people in August and September here are like, "who cares, season is over anyways and ownership doesn't care either".
I fully agree Bloom had some restraints to deal with, notably the payroll and keeping it under the LT. But he's not blame-free either. He's had some real duds at the deadline in both 2022 and 2023 (when we were firmly in the mix for a postseason spot and should have been buyers), and same with the offseasons. Let Bogaerts, Schwarber, Eovaldi, etc. all walk, didn't get any marquee FAs and basically signed a bunch of Rich Hills, Klubers, etc. For every Whitlock he acquired in a small transaction, there were like 100s of Joe Jacques, Ort, Godley, Matt Hall, etc. and we were losing many games because of it too.
He also had a chance to get under the LT and reset it in 2022, notably with the Chris Sale trade offer from Texas, and he said no. Not only that, he kept all of Eovaldi/JD/Bogaerts who left in FA anyways and they didn't reset the tax. That's on Bloom.
Bloom did a fantastic job building back the farm system. But you also need to manage the big league club and supplement that, and he simply didn't do that. And not only that, but in the process he made the Sox a mediocre, irrelevant product in Boston. The Red Sox were clearly 4th in "power rankings" of all Boston teams in terms of interest/contention, and arguably even 5th behind the Revolution maybe. That's how bad it got. TV ratings, fan attendance all being down too.
I still think this ownership group can be sleazy. Now 4 GMs fired in a span of 11 years. But it's telling that even they decided to fire the GM and probably are setting up for a big offseason this winter. I do hope Bloom can find a job somewhere and I think he will. Seemed like a great, friendly guy.