I pay for YouTube premium for my family and there haven’t been any injected ads at all. Only the ones that the video themselves have in, which are also very annoying.
I can’t speak for the future, but I’ve had this for probably 5 years and I haven’t seen a single ad, only the videos that I’ve asked to see.
<cough> SponsorBlock (https://sponsor.ajay.app/) <cough>
It works amazingly well provided a video's been out for at least a half hour or so. It also has the option to skip the "like and subscribe" parts too.
I also tried the https://dearrow.ajay.app/ extension to replace clickbait titles, but decided I'd rather know when a channel/video is too clickbait-y so I can block/unsubscribe.
I wish many of these suggestion worked for casting.
Browser extensions don't fix a chromecast skipping ads, for example. It'd have to be written into the casting client, I'd presume.
Same experience.
The family plan is nice to share with family to reduce how much everyone's exposed to ads.
In-Video sponsorships are a pain, sometimes they are chaptered out enough and can be skipped.
If I could pay for an ad-free google search I probably would. Off the shelf, not doing API calls.