Better yet would be to not let people with five minutes of play time post reviews.
I agree in general. Even games that don't require a ton of time to learn would still benefit from requiring a bit of experience before a review happens.
This also doesn't do anything about the idiotic "reviews" (things like "I farted, would play again 10/10") that aren't really reviews and aren't helpful in any way. I'd like to see people who post this kind of thing have their ability to post reviews removed (at least for a while, til the "reviewer" finds a cure for stupidity). Unfortunately letting the community self police this kind of thing thru up/down voting doesn't work since there are apparently huge amounts of failed parents who spawn and raise complete idiots.
Valve makes ridiculous amounts of money pimping games and it would be nice to see them moderate their reviews and forums a bit more - much more so than seeing them piss away money on VR toys and/or consoles nobody wants.