I'd push back slightly on the idea that top players use minimal addons. During every RWF push, almost every top team has a dedicated resource solely for the purpose of making custom WeakAuras for different parts of each boss fight. During the last cycle, I think I saw Max call for no less than two or three dozen breaks just so folks could make sure their WAs were in sync and on the right version.

Granted I'm cherry-picking RWF where people are severely under-geared at first, but I think it does offer a relevant microcosmic example of the state of addons in retail WoW. They're more or less required for the competitive side of most "hard" content these days, even for the most coordinated of groups.

(EDIT: I wanted to add that in no way do I consider this "playing the game for you". It still took the aforementioned teams like 2 weeks to clear Nerub-ar Palace, and the largest chunk of that time wasn't even on the last boss, it was on Kyveza)