It's definitely deliberate. I'd say most of the more questionable musical choices on recent albums are. It's just not always clear to the listener what the reasoning behind them is, but sometimes it strangely still works.
As in this case. The instrumentation is great, in my opinion. It's quite layered and varied and I love how it intensifies towards the end.
I don't know if Moz would ever notice them or wish to hang around stroky-beardy types - but his sensibility is like a raw, personal, version of the hauntology, psychogeography, acid jazz, folk horror crowd. They try to capture the old atmospheres that haunt our imagined futures and obsess about the margins, borderlines, and memoryholes.
Some of it is really creepy - and some of it is old theme tunes.