I'm curious. I've gone to the same hairdresser for years and love my stylist. But the juniors who wash hair are so 'violent'! Is this a thing that they're taught when training?
They wash my hair far longer than I ever do (and I don't turn up with dirty hair.) They scrub away at my scalp for ages - on and on and on- then rinse and repeat! I find it quite uncomfortable.
I've chin-length hair and it's very fine, so it doesn't need much lather or scrubbing.