to me, 1x seems odd on road and gravel bikes. Definitely benefits mountain bikes, more so than boost spacing or 27.5 ever did.
Which is what, A bawhair wider than the chain?
what is the chain line in the smallest ring? I’ve no idea, but it’s a lot less than 52mm.
there were still boost frames with adequate clearance for a front mech as evidenced by the suggestions on the last couple of pages.
there were non boost frames with room for front derailleurs, too. It didn’t mean that the suspension wasn’t compromised as a result
weren’t 1x and boost conceived when bike designers still thought that chain stays should be as short as possible?