A good friend of mine has an i7 Surface tablet. He had to get the tear-off keyboard replaced twice. The flimsy plastic top surface of the keyboard also frayed at the edges, which I offered to crazy-glue shut again, pinching it shut with aluminum chopsticks (and it looked awful, because it had many tiny frilly folds, like pleats, as this thin keyboard surface had also stretched out in addition to fraying), after swabbing out the built-up grunge inside the crack with rubbing alcohol.
My organization also bought two i5 Surface tablets (not my preference or choice). One had a keyboard also needing replacing, as the trackpad failed (within a few months). White jungle mold quickly grew on the keyboard of one of these i5’s (as I’m in a tropical country), in a matter of a month or three. No mold grew on any of the several other keyboards here.
I also dislike the Surface tablets we got because you only get one full-size USB port, no USB Type-C ports, and one MicroSD card slot. No other ports (besides a DisplayPort, which I would rather have as HDMI).