Haven't seen the LA videos yet Frugal but I'll be a bit disappointed if this is it - I wanted an insight into these U.S. places too. Like going to Paris and not doing a pharmacie haul.
I totally hear what people are saying about waste with the sheer amount of product in the videos, but is it really any different to getting a peek in Vicky Beckham's shoe cupboard, for those who love shoes? I find the idea of that dull, but the disdain feels a wee bit like people coming on a luxury handbag thread to get upset at anyone spending money on a bag. For me, face over bag (only just, and both if I can afford).
In terms of rigour,I'd imagine that like anything else you'd get a feel for testing with experience, I know friends of mine who work in the industry can tell within a couple of wears if something is good for them or not, whereas I take a long while, but isn't that part of the deal when you take advice from a trusted source?
Anyway - as I said above, I'm probably biased because CH changed my life face, but to me, this is a skincare guru sharing her stash, nothing more. I agree though I'd love to see more Target hauls, French pharmacie and the like.