I think my comment was internally consistent with my phone use.

My comment was not about touchscreens in general, it was about touchscreens on laptops. The phone touch experience is excellent because everything is designed for touch. Correspondingly, if you plug a KBM into a phone, it's a very poor experience.

If my phone's display is oil repelling, it simply doesn't work very well. I regularly wipe the screen to keep it clean. Luckily, this is very easy to do since my phone is the size of my hand and the display is attached to a solid box with no hinges involved. I can clean it with my shirt when I notice smudges and am in the habit of doing so. A laptop screen is much more annoying to keep clean.