I won't comment on quality or content.
Realistically, unless there is a major drastic change in the near future vaping as we know it is very near to or on its death bed.
The 'fat lady' started singing 2 years ago, she's taken several breaths and is just about wore out.
The 'market' or field of vaping reviewers is extremely oversaturated as it stands.
Most successful / popular reviewers use professional methods and or equipment or have a gimmick or 'look'.
Reviews of gear / power devices are mostly opinion without actual testing equipment capable of demonstrating features & limits working as they should and can confirm functionality and accuracy of the various modes.
Delivery device reviews are like reviewing vehicle manufacturers and their various models, or the difference in various golf balls or the newest diet fad..
Reviews of liquids are matters of personal tastes & preferences.
Quality tutorials are still a good draw, coil wrapping, mild to complex, wire types, wicking techniques, liquid recipe & mixing, power device trouble shooting & repair, storage & organization etc...