"They suck" might be a bit harsh, but as someone who has used the Surface line of devices since they became good, I agree with your general sentiment. I have similar issues with COSMIC and Plasma 6 on my new laptop.

In my opinion, computer touchscreens are one of those things you don't realize how nice they are until you've already gotten used to them and are faced with the sub-par alternative. Say what you will about Windows 11, but it is extremely good for touchscreen interaction. That is not by accident. I strongly believe that any UI that takes touch seriously will significantly enhance its KB+M experience as well because it has knock-on effects on the UI. It's a bit like mobile-first. When you stop treating touchscreens as an afterthought, you are forced to become a better designer. You start thinking more clearly about information density, visual hierarchy+feedback, and most ironic of all, it makes keyboard navigation even more pleasant. I would love to see more focus on touch-friendly desktop apps, even if only for those secondary benefits.