I find the Youtube reviews to be better than gun rag reviews, flat out. With that said, there is a bunch of garbage in both, but Youtubers sometimes will tell you when they have a piece of crap or something isn't ergonomic for them to use for some reason and why.
Like gun rags, but with different motivation, some Youtube reviews seem to be a bit of bragging or "ain't this really cool" sorts of reviews where the owner doesn't want to admit that there are problems with the product that they just spent a fortune on because admitting that they spent that much and didn't bother to check into the product first makes them look like an idiot. Of course, you get some of that on the gun boards, too.
Regards of reviews on places like TFL or YT or even sometimes in gun rags, I look for trends about what is said. If several people mention in various forms that they had trouble controlling the gun because of recoil issues, then maybe the gun isn't as ergonomic in that regard as maybe it could be and hence the problem is a design shortcoming. And it is the shortcomings that I usually want to know about the most. Usually when buying a product, I have seen some cursory reviews and have some idea of the capabilities of the product, so I look for reasons why the product may not be suitable for me and often folks make statements, sometimes fairly detailed or explanatory, that really shed light on salient issues. Sometimes the things that bother reviews on YT for gun forums most don't bother me at all and so while they may not give a glowing review, the key things I am concerned about don't appear problematic and that is insightful too.
Overly ranting or overly raving reviews are often too emotion-oriented for me to put stock in one way or the other and I usually blow off most everything they have to say that is evaluative. Few products are truly perfect or truly disasters.