[drewg123]

It has a far better user interface than the official YT interface. And that interface can be heavily customized to your exact preferences.

My wife has YT Premium, and we find ourselves watching YT in SmartTube just because the interface is so much better.

[leptons]

Same here, we also both have YT Premium and use SmartTube. Our dislike of "Shorts" pushed everywhere in the YT app is what got us to switch to SmartTube. We watch Youtube on our 65" TV via Chromecast, so shorts are just really a crap experience and we do not want to see them at all. SmartTube lets us eliminate them, as well as all the other awesome UI customization makes it a far superior experience.