I don't mind it. If I like the video, I'll watch. If I don't, I won't. Simple as that. Guess it helps for me in the sense that I've pretty much stopped buying long ago, due to finishing my collection a while back and truly, being at peace with it. So these videos and price spikes don't affect me any. For those that it does, it is what it is. Some videos are entertaining, others not so much.
Also feel for the most part "hidden gem" is such an overused thing these days. Maybe 8, 10 years ago a lot of these games qualified as such, but most, like Hagane, Wild Guns and so forth really aren't anymore today, and haven't been for YEARS now. But people will do what they want to do, and I say, more power to ya.