I mean, they're no more on autopilot than any other job.

Because, virtually all combat rotations in this game are static or quasi-static in nature. Meaning you can know 10, 20, 30, 100 GCDs in advance. And the only thing a glowie button or an autocombo does is collapse X of these GCDs into a single button that cycles between the skills. But functionally it makes 0 difference whether these are on the same button and swap out or do not, there's no variety either way. (In fact that's the big pro-argument for autocombos, there's no player agency either way so why even waste hotbar space on it for no reason)

The two exceptions would be Dancer and Pictomancer, and even those just slightly mess with it. Dancer due to the coinflips on just about every move and the genuinely random simon says order. Pictomancer because there's no truly fixed position for the motif paints.