Garand Thumb for the win. If only for the comments section!
Airsoft "reviews" of kit that are literally just "it's a thing that's made of stuff it comes in lots of colours" are worse than useless, same goes for unboxing videos of gifted bits.
Actual informative reviews of stuff a la @TheFull9 are great, anything that has the "reviewer" in full gear fumbling about with stuff while wearing tactical gloves gets an ignore straight away.
I'll also say one of the BEST channels for airsoft is Negative Airsoft https://www.youtube.com/channel/UCdWFrvXg78qI4j8Brfit2XA cos Luke is ace and he swears like a navvy with Tourettes.