> dismiss people's legitimate concerns
Ignoring your rudeness, the word "legitimate" is doing a lot of heavy lifting here. It would take me one second to present you with an issue that concerns me, that will make you say "suck it up" because you don't consider it a legit issue, and I would end up being the asshole in the exchange.
> It would take me one second to present you with an issue that concerns me
Does this hypothetical issue concern you AND the rest of society as a whole as well, or just you? Because there is a big difference between the two cases.
How many people do you require for it to be a legitmate concern? I can show you millions but you will disregard them anyway, because they all have wrong opinions.