I am completing a DIY project at home (kind of a hobby), and when you look at YouTube how-to videos from ‘professionals’ / ‘experts’ you see a ton of variability in how they do things and what they recommend. They even trash each other in their videos. My point is just that you always neeed to think for yourself - as being called an ‘expert’ doesn’t mean you truly are.
As far as these “experts” go, for me it comes down to what works and what doesn’t. Just check out all the 1911 related YouTube programs. You have to wade through a lot of self-important trash.