>>102030303Not necessarily full drama, but look at something like Symbionic Titan: it had its share of humorous moments, but at its core, it was a serious thing.
Or hell, if they want a comedy - Harvey Street Kids: none of the protagonists are assholes, and are actually helpful (which already sets them apart from Gravity Falls / Star Vs, nuDuckTales); most jokes are fairly light, and do not try to piss off the viewer.
Overall, yeah, Disney doesn't seem to know how to do comedy that doesn't piss on all other elements of the show.