How many of the above are actually ‘short travel’ though? Is 130mm short now?
In typical STW ‘recommend what you own’ fashion, I would suggest taking a look at the Trek Superfly range.
I’ve got the £1300 6 or 7 model (I forget which). 100mm Rebas, SRAM GX 2×11 (little ring seems mostly redundant) and Bontrager finishing kit.
It’s fast, feels light (I’m out of touch with what is actually considered light for a 29er hardtail) absolutely rips singletrack and doesn’t feel out of its depth on bigger natural terrain.
It even flies over trail centre pump tracks etc. although I did take a bit of a kicking on on of Comrie Croft’s steeper and gnarlier reds, relatively narrow tyres and no dropper probably didn’t help.
Anyway for fast and flat trails I’d bet he’d have more fun than on anything longer travel and slacker.