Well, that's a deflection.
If someone's opinion on a game is purely based on seeing video of it, I'm generally not going to take their opinion on it very seriously in most regards (I mean they could have valid opinions on cutscenes and voice acting or w/e) and I think others are justified in being dismissive.
That is a perfectly reasonable use of "gate-keeping" based on a reasonable set of rules. If people aren't following them, then by all means, call them out when they don't.
There's deflection in this very thread, in regards to the TLOU II's shortcomings.
I find it a bit odd how reviews and even documentaries on something, cannot count towards swaying a decision, unless someone actually opts to waste money on something, only for them to decide "they didn't like it", while completely ignoring all the information that was available to them beforehand.
If we go by those made up rules, then I guess a good chunk of this forum can never really talk or say nowt or any ill of any PC exclusive game then (yet we've had that for years and not much has been done about it, so I'm left asking you mods as to what is going on with this duality you've not presented).