What reputation are you referring to? In the John Henry era, now in its 3d decade, the Sox have not had that reputation even though they definitely fell apart in 2011, which cost Francona his job. Four WS wins (and no losses) in the JH era is one more than any other team and three more than the Yankees. Just two years ago a throw-together Sox team won 92 games, beat the Yankees in the wild card, the 100 win Rays in the ALDS, and finally lost, 4 games to 2, to the Astros in the ALCS.
Last year's Sox did not fall apart. They struggled from the outset.
All that said, I don't disagree that getting a wild card this year is far from a certainty. The Sox are playing great right now, but are about to play (Aug 4-Sep 20) 48 games with just two days off, and their rotation is 3 + Pivetta. I have my doubts about Kluber, Houck, and Whitlock, but think "good" Sale would make a real difference. So Bloom getting another reliable starter is almost essential. The problem is those guys can be pricey in prospects.