It's not too small, Windaz 10 will scale/zoom to fit. Some notebooks run 4K on ~13-15" displays. I personally wouldn't bother at that size. I'd want at least a 27" for 4K.
Can confirm, have a 4k 17inch laptop. It's a bit annoying on occasion tbh, though most programs seem to be catching up and making 4k gui's now and windows zoom/scaling works most of the time.. At this size i can't see much difference between 1080p and 4k for most media. Wouldn't go out of my way to get a 4k laptop again.
In this instance i wanted 100% Adobe RGB coverage and thats why i put up with it.