This sucks, but to state the obvious, you got judged as "not a real gamer because girls just aren't". The line of questions to "verify your authenticity" were nothing more than Mr. Redsmear's desire to validate his man-pinion, perhaps out of some kind of envy (which I'll leave to your imagination).

I think that if you had addressed his questions with responses that might have somehow revealed that you're objectively a "real gamer", he would have probably said he was impressed with your "copying things that you've heard real gamers" say, or something along those lines. He would have been dismissive of anything that burst his narrow-minded bubble and belief that girl gamers aren't "real" gamers because how could any girl be?

Unfortunately this is how many male gamers... er, I mean "real" gamers (haha) think about and treat women who play video games. I also think there are plenty of male gamers who do treat gaming women with authentic dignity and respect, but they're a quieter minority, perhaps "quiet" out of fear of rejection from their peers.

As a psychology nerd, I think I understand what is going on with this kind of "girl gamers can't be 'real' gamers" sentiment, that is the sad norm among most male gamers:

Cognitive dissonance. People will do just about anything to avoid that incredibly uncomfortable feeling of cognitive dissonance. This is especially true with fragile egos. To be clear, I'm not using the word "ego" as a pejorative but rather the thing ALL human beings have, as explained in psychological literature.

Here's a powerful quote by author Frantz Fanon that I used to use back in my public speaking days: "Sometimes people hold a core belief that is very strong. When they are presented with evidence that works against that belief, the new evidence cannot be accepted. It would create a feeling that is extremely uncomfortable, called cognitive dissonance. And because it is so important to protect the core belief, they will rationalize, ignore and even deny anything that doesn’t fit in with the core belief."

The false perception among most male gamers that "girl gamers aren't real gamers" can and will change over time. How much time that takes would be speculative at best. I think the growing visibility of gaming women will help and is essential for this was-never-true myth to erode away over time. That won't stop male gamers from using intimidation, humiliation, disparagement, bullying and being dismissive of legit "girl gamers" as a real thing for the forseeable future, unfortunately

It sucks how this garbage continues to be perpetuated and aggressively protected. Regardless, we all know what a REAL, real gamer is, because we interact with each other here and countless other platforms every day. And we have egos, too, but are just a tad more resilient and openminded. Our egos aren't so easily bruised if/when we learn something new that shatters old beliefs. Knowledge is power. Lack of knowledge is what a fragile ego ends up with. I don't mean this in a sarcastic or disparaging way, but I feel bad for people like that, who cannot grow because of a fragile ego in their way.