Most professional YouTubers complain about having to tailor their videos to suit the recommendations algorithms. Historically, many short videos were padded out to just over 10 minutes in order to reach the minimum threshold to insert a midroll advertisement; today, many videos are as long as possible to take advantage of the algorithmic prioritisation of view time over view count. There is widespread dissatisfaction with the recent necessity to use clickbait thumbnails and titles, due to YouTube's increasing weighting of click-through-rate.
Most analysts believe that the high weight on view time is causing the YouTube algorithms to promote the kind of videos that their heaviest users watch. The problem is that these heavy users aren't representative of the general population - they're far more likely to be interested in conspiracy theories or extremist politics.
The vast majority of YouTube video views are as a result of algorithmic decisions by YouTube - what to show in the recommendations bar, what to prioritise on the home page, what to put at the top of search results. Those algorithms are not and cannot be neutral. These algorithms aren't just shaping which videos people watch; YouTube creators freely admit to tailoring the content of their videos to fit the recommendations algorithm.