In platform-specific matters like this (text rendering, input handling, &c.), Microsoft has always led the way in IE or now Edge, Mozilla following after a while (admittedly often years) in Firefox, and Chrome typically years later. Firefox and Edge handle precision touch very well; Chrome… well, it’s OK these days. But definitely not great.

I’m still waiting for Firefox or Chrome to actually implement the Pointer Events API properly. Edge does exactly what I expect, Firefox does almost everything as I expect, Chrome is simply terrible. And only Edge supports pressure sensitivity, so the Surface Pen only has full utility on Edge.

This is obviously a Chrome issue seeing as scrolling is super smooth in everything else

But there won't be support if they are just one of many different types of hardware people have. That is probably why Microsoft is mandating them.

sure, but generally if capabilities exist in the hardware applications will arise to take advantage of those capabilities.

chrome does its own crazy smooth scrolling stuff, it has also been changing a lot in the last few release. YMMV.