Mistwell
Crusty Old Meatwad
You're entirely right, by the way. The ultimate brokenness of these feats is the way they invalidate a lot of concepts.
If a gamer can't optimize the feats well enough to see how good they are (or refuse to acknowledge this) that isn't something that should let WotC off the hook. That is why every time a so-called analysis is published with results that seem to indicate they are reasonable I make it clear the analysis stops well before any effort to actually break them is applied.
I've seen you use the term "break" several times, but I am curious to know precisely what's happening to your games when you say something "breaks" them. I don't mean theoretically with averages, I mean I wish you'd recount for us what actually happens, step by step, and how the game breaks, and what happens in the broken game, and how all the players and DM react to that breaking.