Something that I hate these days is that the most visible channels on Youtube are going to be the vendors', or "influencers" paid to push products.
As a result, imagine being a newcomer now, and seeing BRS showing you "hey it's very very hard, but it's fine if you spend a shitton of money with us! Oh, and by the way, buy our dry rock, it will look like crap for a year but after that, amazing, maybe".
When I started, in 2004, it was after seeing a couple of pictures of nano tanks and seeing that you could do it with a simple CFL bulb, a minijet for water movement, and some quality live rock. And guess what? After a month being amazed at all the stuff that was popping out of the rock (including a gorilla crab and a mantis shrimp... which were not that big of a deal to capture), it grew softies easily, and even Montipora. Then I upgraded to a 70W MH (over a one foot cube...) and then Montiporas and Acroporas were growing too fast.
These days, there are still old school people who try and sell frags for cheap (before my tank broke, I was selling 2"-3" frags for $5, and not a nub with one polyp). Because that's how you get people started, and hopefully staying long term.