The problem is not that MAGA "ate them, chew them and spit them", but that the traditional neoliberal shit GOP circles "ate, chew and spit" the MAGA movement and what people voted Trump for. Instead Trump was fully assimilated to the Borg/Swamp, with a big fuck you to the MAGA promises (except the show he put on about immigration).

Trump was never ever going to drain the swamp.

And I wouldn't say he served existing entrenched interests very well either. To the extent he touched the swamp it was to put in worse people only he liked.