Agree. I know some people want that. Me though, I'm 85% done filling in some format, I scroll up to reference something that's off the screen, the effing 'pull-down to refresh' triggers and I have to re-enter everything I just frustratingly spent time entering with mobile input being so shit.
IMO this should never have existed. if X or whatsapp or some site wanted pull-down to refresh they can implement it. 99.99% of sites do not need it.