We really don't know what if any limitations Henry has put on the budget. but we do know he does on occasion allow it to get very high.
And exactly how good was the foundation of the 2012 Red Sox? They had Pedroia, Ellsbury and Ortiz in the lineup, and Lester in the rotation. (And Lackey coming off TJ.) The starters expected back included Middlebrooks and Saltalamacchia. Thay had vacancies at 1B, SS, LF, and RF.
The rotation lost Beckett and Aaron Cook. (Yes, Aaron Cook). And the best reliever was Junichi Tazawa, although Andrew Miller was pretty good, too. But this was not a team that looked one season away after the Gonzalez/Beckett trade..
The Sox did have Bogaerts, but the only other rookies of note that year were Iglesias, Workman and Bradley (although this was long before JBJ learned how to hit).
The 2020 Red Sox arguably had a better lineup than the one that ended the 2012 season. And while Lester/Lackey was a formidable pair in front of the rotation, ERod/Sale can be one as well.
This team definitely needs more pitching, but will also have fewer holes to fuill in the lineup, possibly just 2B and CF, and might be able to do so amidst a stretch where many MLB teams are not spending.
THere is no reason to write off 2021 just yet. At least not until we see what Bloom actually does....