His cover of "Here Comes the Sun" brings it home to me what the problem is. There's just too much going on all the time. It sounds messy. No element is allowed to simply play itself out but always veers off in another direction in a way that doesn't make sense, or is overlayed with a dozen other things.
The trick to experimental pop music in my view is to keep the complexity on the arrangement side, while having the melody up front and distinct.
That and there's simply nothing that interesting going on in the music. The layerings are mostly like superfluous ornamentation and the productions are flat. It sounds clean in a way that puts me off.
I do appreciate that he sings while clearly not a virtuoso on that part. I don't find him pretentious or standoffish at all.
I don't buy that there is some calculation behind the music either, like finding some middle-road between popular appeal and avant-garde. I see no reason to believe other than that he makes the music he enjoys and that stimulates him. There are plenty of talented instrumentalists with crap tastes around.
This song is ok. Not masterful, but fine if it were less adult contemporary-sounding. Which therefore I take to be simply his style.