I've had multiple Apple touchscreen products. The same on all of them. Sometimes I have to lick my fingertip to get it to register.
We’re going off track, but I’m curious as to whether you experience this problem only on Apple devices, and not – for example – Android devices?
(btw, it’s an honor to be able to reply to you; hope you’re doing well :) )
My understanding is that as people age their skin stays drier and causes this issue.
The parent post is a chef’s-kiss-perfect illustration of the problem with modern tech.