It definitely takes a fair amount of constraint to not go 100% with the aftertouch on most keybeds (I remember Summit being particularly bad), but I find the trick is to press the keys as far to the front as you can - the additional leverage makes them a tiny bit easier to depress, thus by not needing to press quite so hard, you’re a little less likely to overshoot your mark. It’s not much, but I find it does help a little bit. I have the desktop version, but I also have a Prophet 10 and a Virus TI2 Polar, which I believe both use the same keybed, and on the Prophet 10, you basically only have an on/off switch for aftertouch (technically a filter/LFO/both/off switch) and can’t set the level, so you really need to be careful, and this technique does actually help me a lot. Hmm, I wonder if it’s something that softens with age - would be something to look forward to.