F9/Ryan offer good production values and smart analysis - I read he has a degree in history and physics so he's giving the bikes much more thought than your average dudebro yootoober. I would believe all that math/analytics is from Ryan.
But that's also their downfall. They go against the standard model of raving up every bike, likely irritate the manufacturer who in turn decline giving them models to review. Doesn't matter if you understand their video formula is usually: criticisms -> praises -> balanced final thoughts. Impatient viewers make it halfway and see only contrarian complaints.
Also spending years taking shots at big marketing doesn't help either, as entertaining as it is to us: