I mean, I can’t comment on Safari as I don’t have anything fruit-based in the house. Rather, it would be something of a coincidence if it were unrelated.
There’s been rumblings for a little while now that YT was going to crack down on ad blockers, I don’t explicitly block ads on YT so much as it’s been a side-effect from when I spent an afternoon locking down Chrome several years ago. I couldn’t tell you today what I did back then. I use Chrome as my primary browser (on desktop, I’m playing with Brave on a laptop) but also have Firefox and Edge installed for when I’m hoist by my own petard and it’s simpler just to hop across to a different browser than try to unpick settings.