To answer your first question: I think they view Brasier as a one inning guy, and using him over two seperate innings might have been thinking they already pushed their luck. The second reason might be the match-up with the next batter- I forget who it was.
On the surplus of 7-7 inning guys, I think you got to the crux of the problem:
1) The surplus of 5-7 inning guys, some of which are not trustworthy in that role either, is not really a good thing.
2) We have 3 reliable 8-9 inning guys, and it's hard to call any of them a lock-down closer. Houck, Strahm and Schreiber can not handle 2 innings, every day. We need our starter to go 8 or 9, or we need a shaky pitcher, not named Houck, Strahm or Schreiber, to pitch the 8th maybe half the time or more. It's just asking for trouble.
I do think Bloom is to blame. He extended Barnes and gave the rare 2 year deal to Diekman. In his defense, I will say we had the same concerns about the pen, last year, and it worked out okay, despite the starting pitchers doing much worse, last year and putting more stress on the pen.
We can blame the limited winter spending budget or how Bloom allocated and divided the spending budget he was given, and that is all fair game. We can complain about how Story has not earned his paycheck, so far, or how Diekman has been a failure, but I'm not sure any RP'er signed for $4M should be expected to be a savior. We went into last year with no sure closer and a ton of question marks, and somehow Cora cobbled together a noteworthy season, using about 5-7 different closers and top set-up men. I think last year's success clouded Bloom's judgment concerning the pen.
That being said, focusing on the mistakes and weak areas seems to take front and center stage more often than not. IMO, when you look at the overall picture of what Bloom has done since day one, it's been a clear plus in almost every area. If you look at just last winter:
Story: not earning his paycheck, but not a complete failure. Take away everyone's best week, and he still leads the team in rbi per PA. That's a stretch, I know, especially coming from someone who usually criticizes those using rbi as a major measuring stick, but thos are the same poster most vocal about Story's failure after 53 games.
Diekman: I disliked the signing from day one. I know it's only $4M, but why did he deserve the rare second year?
Hill: At $5M, I think most would agree, Bloom got what he paid for. I had hoped for a little better, but I think he's a good 4/5 starter.
Wacha: A clear major score for Bloom. This signing alone, more than balances the failure of Diekman and slow start by Story.
Strahm: Another clear plus, and within the context of a pen in shambles, he's been a steady force in racking up wins when the pen was needed most.
Brining back Robles was a mistake, but at $2M, and looking at what he did, last season, I think it was an understandable signing. Other guys picked up, last year, have done okay to well: Schreiber, Davis, Refsnyder & Danish.
The JBJ deal has been beaten to death, but it looks a little better than it did when made, which to me, is not saying much.
As we stand right now, we are in the playoffs- same as last year, despite some major offensive struggles early on and a pen that looks like a coin toss, everyday. Considering where this team stood after 2019 and through the 2020 season, where we lost Betts, Sale and ERod while spending just $20M and had the weakest bottom 20 on the 40 man roster than I have ever seen as a Sox fan, I think Bloom's tenure, so far, has been a net plus.
This next winter will be his defining moment.