I don't think I've ever been one to blame LL for anything bad Ben or Theo did. I know others have.
I think debating a GMs moves is a large part of why boards like this exist. All the "what ifs? and WTF's? constitute a significant percentage of all posts, rightly or wrongly.
It's been decades since I ever called for a GMs head, although I've been highly critical of many decisions made along the way. I'm also usually one of the last posters to call for a manager to be fired, including Bobby V.
I actually like DD, and looking at the totality of all his moves, I'd say he's on the positive side. I'm okay with a win now philosphy that involves a window bigger than 1-2 years. A 4-5 year window was and still is fine by me, but some assume I hate Ben, because I speak of the cliff too often. I try to be a realist despite my Sox bias. I like to discuss GM moves, non moves, managerial choices, but I try to avoid criticisms of managers over one or two in game choices made. That's one reason I usually avoid game threads.
I get that hindsight judgement of GMs is not inherently fair, but it's an age-old tradition that is hard to shake. (That's one reason I try to give my opinion right away, so it does not appear like I am hindsight bashing or praising.)