while you make some good and valid points. you don't fully understand how the algorithm works, no one does fully, you can't work it out in 2 months, thats quite laughable no matter good your education, youtube keeps a lot of it secret for a reason, so people son't find the loopholes and all the content becomes the same recycled s***e because that works well. far more inteligent people that us have spend careers working on this stuff
you also missed a MASSIVE point regarding youtube and how they value channels. and that is bringing people onto youtube. and starting them on a watch session. by that i mean youtube really values any channel that can get someone to log on to youtube to watch the video and then stay on youtube and watch more videos (not just your own videos, anyones)
a example would be if i tweeted about my latest video on twitter, random guy sees my tweet, click it, goes to watch my video, then goes on to click a few random suggested videos and spends a couple of hours on youtube. thats gold right there. your attracting people to the platform (this is not my research, this is research done by experts over the course of years) session watch time is huge for youtube
as for likes and dislikes. your wrong about that. getting likes and dislikes still shows engagement, its not massively important but every little helps. its not as powerful as say a comment but it still helps
as i said there is some really useful stuff in your post that people should learn, i think you could have written it better, like your top tips for how to grow on youtube, instead of a look at me, i am more intelligent that you, now bow down to my greatness and let me tell you exactly how it is
one final point, your point about youtube being 100% fair, this is a weird discussion, some people see fair as "if i make a identical video to pewdiepie, same title, thumb, tags, same retention etc, all that good stuff, then i should rank (in the search) the same as pewdiepie". where other might say its fair that he ranks much higher because he has proved that his videos do well (even though they are identical in every way)
some people might consider it not fair that some unknown could create a fantastic amazing video, better than 99.9% of other youtube videos but because he sucks at SEO or Thumbnails etc, it never gets found, as afterall, youtube should be about the content right?
i don't think its got anything to do with what you or anyone considers fair. i think its a case of "this is how youtube works"