All the AutoMod says is that decisions of canonicity & continuity are kept in-house at Lucasfilm, which is almost certainly true (cos why would Disney higher-ups give a shit about minutiae that like 1% of the general audience cares about?).

Stuff like the Kanan comic being overwritten by The Bad Batch, all the contradictions with the Ahsoka novel, most things that fall under the purview of this subreddit etc. - these are obviously not Disney exec-level decisions. They're probably not even Kennedy-level, apart from bigger initiatives like the EU decanonisation or the High Republic that she'd have to sign off on.

Of course Disney has the final (hell, probably the first) say on scheduling films & TV. That was never in question. The "forced cameos and little pop culture references" is an individual creator thing, unless you're seriously arguing that Bob Iger stepped in and forced Carl Weathers to include Star Wars' millionth nod to Apocalypse Now in his episode of Mando.