C'mon man, you are sounding like you are joining in on the narrow mindedness. I.e. Just because something works for you, on the kind of riding/terrain you do, doesn't mean someone else doing the opposite thing is wrong.
I reckon there are xc race courses out there which would warrant a dropper post, not just for more fun, but as a genuine performance enhancer (i.e. increase competitiveness) for the majority of riders, including those with skills of the very elite.
Likewise, there would be courses where the extra weight of the dropper (dunno, about 300-400g?) would be felt too much of the climbs, and not sufficiently compensated on the descents, if they weren't the kind where a dropper helps.
For me, I have been running droppers for over 10 years - started with an original gravity dropper. On my six inch trail bikes. But I don't use one on my xc bikes, as the kind of courses I ride only have probably about ~2-3% of track that i would be faster on a dropper. While I still have at least 5kg that i could lose off me (I might get close by September), I'd rather not be carrying that much unecessary weight on the bike for the other 98% of the course. Having said that, I have recently been chickening out on a few obstacles, and taking the b line, but that was on my old 26er with 71 degree head angle, longer stem, where the front-tippy feeling moments seemed to be pretty often.
I reckon we will increasingly find people running droppers on xc race bikes, probably as the weight comes down, and the course features get a bit hairier. Will be a while for me though - I've now got a new slacker, shorter stemmed, bigger wheelled xc race bike that should get me through even more of the tough bits without feeling that I need stretchier arms and legs to get further back and lower.