I think the accuracy doesn't even matter too much. Personally, I believe I base my decision to watch the video after clicking on it on the ballpark the like/dislike ratio is in. "Almost only likes", "2/3 likes", "50/50 likes/dislikes", ... For that purpose, the extension does its job.

> with extrapolating data from those who use that extension and like/dislike.

Often you see the opposite, where a third party service provides customers with a feature extending the features of a big service like youtube or twitter, and then the big service buys the startup offering that extension, or integrates the feature themselves, leaving the extension dead. Now we see it happening in reverse direction, very interesting.

No see the other comments, they disabled this ability for non channel owners.

That's the analytics API. We already know they show dislikes to the channel owner. Isn't this the same thing?

And your other comment says "The dislike count is also still present in the [0] video API response." but the page says right there "Note: The statistics.dislikeCount property was made private as of December 13, 2021."

Are you sure? I remember reading that data would be removed at the end of last year.