If you've got an Android TV (natively, or a TV) then this is a great UX for finding and playing youtube content directly on the TV, no mobile device needed.
It also has a bunch of improvements over using the Youtube app on your phone - Adblocking, and Sponsor Blocking being two major benefits.
I was until recently paying for Youtube Premium and it was getting increasingly frustrating trying to watch most content for the number of intrusions into the content. From "This video brought to you by <the same 30 vpn/site builder/audiobook> companies" to "Hey, just to interrupt - do you know that 90% of people don't subscribe to this channel?"
Putting SmartTube on the device took about 15 minutes, most of that was finding a browser that would let me download a file without showing a million ads.
