I wonder if it has to do with how harsh the bottom out may or may not be.
Personally, I find that medium-weight switches with a harsh bottom-out are more fatiguing to me than heavy-weight switches with a normal or dampened one. Similarly, progressive spring linears that actuate normally but with very heavy bottom-out weights are less tiring to me than the medium weight harsh tactiles.
This Halo stem frankenswitch is one of my favorite switches ever in terms of being fun to use - but they wear me out and having them as my only switch wouldn’t be ideal, because they migh thave the harshest bottom-out of any switch I’ve tried so far.