I dunno, it's all relative, hand finger effort. In the 90s I toured in the Pyrenees and my cantis were hard on the hands fingers at times, especially in multiple hairpin stuff when I did lots of repeated had braking, and did fade then a few times and had to carefully stop to let things cool.
But they worked, and my more recent canti and v brake bikes work fine generally as well.

All that said, my troll with BB7s that are from at least 3 years ago I think (bought bike used so unsure) stop it loaded with significantly less required hand pressure than my rim brakes. I don't know if newer ones or if diff models like spyre are even easier, but mine are perfectly fine to use and I'm a slight guy, so not strong hands but then light, so less weight to show down too.

I still think mechanical discs are the way to go for touring, for the various reasons. Hydros work great I'm sure, I'm just not crazy about a few of the issues that could come up traveling.