I’m over six foot and when droppers first came out, 125mm was fine, I dare say still would be fine tbh, I don’t get the need for 200mm+ droppers
I sort of agree, I have been using a 100mm dropper for ages and recently got a 150mm dropper, that extra 50mm does make a noticeable difference, the saddle is that bit more out of the way, but I’m not sure and extra 50mm (200mm) would benefit me as much (or fit the frame) so there’s certainly an optimal amount of drop for.most people (I’m 5’10”).
As an aside my old 100mm dropper is now homeless and I’ve been mulling if I want to fit it to my HT or my gravel bike, both of which have been fine so far without a dropper. I’m nudging towards the HT, and I know 100mm will be sufficient on either.