Creators can view their like and dislike percentage, and around when the extension came about, many large youtubers were able to confirm the accuracy of the guesstimate that the extension gives you (on new content after the dislike indicator was removed). There are enough users and historical data to make the calculations reeeeally close.
Then why put any stock in it whatsoever
Because it is quite accurate
And you’re basing that conclusion on…?
Creators can view their like and dislike percentage, and around when the extension came about, many large youtubers were able to confirm the accuracy of the guesstimate that the extension gives you (on new content after the dislike indicator was removed). There are enough users and historical data to make the calculations reeeeally close.