Ivy Leaguer who helped build the Rays system, which dollar for dollar is the best in MLB. Also, it's clear that JH has provided guidance to spend less.
Bloom replaced DD, who was given a free hand to buy whatever was needed--starters, a DH, a closer, you name it. Plus, when DD arrived in 2015 the Sox already had some good young players like Mookie, Raffie, Bogey, and Beni--either in Boston or on the way up. JBJ was still hitting (which he barely could in 2014, his first year starting in CF). In 2018 the Sox were the best Sox ever, and the very next season they stunk while JH was still paying a king's ransom for them. So out went DD, and in came Bloom with new guidance. Do more with less. Easier said than done.
I cannot refute criticisms of specific trades/deals Bloom has made. Chapter 5 for Whitlock was brilliant. Others not so much. I'd definitely rather have Schwarber than Yoshida. Letting Renfroe go and bringing in JBJ was mindless. The new contract with Barnes in midseason 2021 was ill-advised.