When I am on the webpage on my desktop there is the x button that says something to the effect of "don't show shorts". I click that and the strip of shorts are removed.

For the app shorts is a different tab on the bottom of the screen. It goes Home, Shorts Subscription, Library. Shorts are never mixed him to my regular feed.

My Android app has shorts advertised in horizontal scrolling sections every so many videos.

You can click not interested on them all, it takes some time to get through them all, but after a week or two they are back and it's rimce and report.

Yes I do have a shorts tab at bottom as well. I never click it. It's the shorts in my feed that are a pain in the butt.

I dont think it's possible. I wish I could scroll in them.