Confirmed saddle dropper here so I do miss my dropper when I don’t have it, but there’s always a qr for the proper descents.
I like to stabilise the bike with my thigh against the saddle when I’m out of it
I’ve heard this said before and if it works for you then that’s cool (I’ve seen some pretty fast riders who never bother to drop their saddles) but don’t most skills course teachers get customers to drop their saddles if they haven’t already? and I’m pretty sure DHers don’t have their saddles at 110% of their inseam. So I reckon most people would benefit from dropping their saddles and CoG and riding “in” the bike a bit more.
Of course whether a dropper* (or stopping to manually drop the saddle**) is worth that benefit is an entirely different question.
*Heavy, expensive, potential faff lumps that they are.
**Messes up my flow dude.