Eh, I'm not here to hawk product. The higher bitrate is nice to have, but the impact of bitrate on video quality is perhaps a bit overblown. In a lot of situations, you'd have to pixel-peep to spot the improvement -- youtubers are pretty good at making videos look nice under the core quality settings.

On the other hand, ads suck. I'd have never watched enough YouTube to buy premium without years of heavy adblocking (shoutout to ReVanced Manager). Getting an ad-free experience out-of-box is very convenient and could possibly be worth the value of the subscription depending on your usage & means.