I think you're right for the most part, but it's all about finding youtubers you can trust for an honest review.
I find both HookedOnWood and BischBaschBosch to be very honest and give a review that I would trust. They often give an unfavourable review of bangood products for example. Which is great, because it appears that the manufacturers actually listen and fix the issues.
There's a necessary evil element to it, much like there is with politics or business leadership. That is, the average person who idealizes that someone would spend their own dime, be experienced, and then do all of the little nitty demands (for example, I won't clean my shop, I won't make a script to talk through and won't edit or have a second person doing the camera - all of these make for terrible videos - it probably takes a couple of days of man/woman hours to make a good video and do all of those. If you don't, it takes about 40 minutes to do a 20 minute video (less if you don't watch the video at all).
Realistically, the channels that do the things that will bring them to the top will only be run by people turning on ads, and you're secondary in the process. The channel and the ability to get revenue from it and perhaps to get sponsorship is by far first, and the person seeking those will outwork anyone else. Just like most business leadership will rise to the top when they can get past the idea of considering everyone else all the time (which is idealistically wonderful, and competitively limiting).
Just my opinion, but I tend to view channels like that only when they are reviewing something that I want or absolutely need, but you can see by the viewership that there's a very strong contingent of folks who watch everything whether they want it or not.
That's the "magic of the internet" stronger than anything else that I can recall - if you watch things that you can buy, you will buy more of them, even if you think you won't. It works on me even though I know they sprayed the magic dust in the air, so to speak. It's so bad that even if I get fascinated and start talking about stuff on my own, I'll buy more if it when I don't necessarily need to.