All good points... and what it means, as usual, is that good, durable, reliable starting pitching is the key to everything.
There seem to have been several spells lately -- usually at the beginning of the season or in the first half -- where the Red Sox bullpen actually looked decent... especially in early 2021, when the All-Star caliber combo of Barnes and Whitlock had them vying for first place.
But the bottom line that always leads to relievers bottoming out is overuse, and it's usually because the starters can't even give us five innings, never mind a "quality start."
Hence, the never-ending need to find, develop, promote, buy, and trade for more starters, starters, starters! ... yes, I wrote it three Blooming times (not even a subtle hint, hint).