This could be simply a coincidence, but it's possible they already relax their system based on user behavior.

I used to watch YT through the TV app until the ads became insanely outrageous (six unskippable ads for a 10 min video, including two ads one minute after the video has started). Then I just bought a mini pc and plugged it in the TV and everything was fine (except for HDR that for some reason doesn't work) and without ads.

Then a couple of weeks ago I opened the YT app on TV and it was actually a much better experience than before: skippable ads, no ads on some videos. As if they're trying to lure me to use it again.