One benefit with mechanical keys though is that there's a massive variety of types, so you can easily find something that works for you. You can get short-travel (i.e. Kailh speed series), soft bottom-outs via something like the Boba series or by using o-rings, high resistance or low resistance with varying spring weights, tactile vs clicky vs linear for feedback.

With a membrane keyboard you have zero choice beyond moving from one brand/model of keyboard to another, but with a hot-swappable keyboard you can try multiple switches until you find one that suits you and doesn't aggravate any existing RSI or trigger new forms of RSI.