PgUp/PgDown when easily possible to use (the webpage/program isn’t crap etc) is very quick. If that doesn’t work, i can probably still outscroll or at least match you with two thumb scroll on the touchpad.
What I’m genuinely not sure about is how healthy touchpaddin’ is on the wrist… but i’ve been doing it for about 25 years without major issues so i guess i at last for used to it.
Stock Remunders app, that’s the best