Decided to queue for mentor roulette for the hell of it, got Snowcloak and noticed the healer was new. I thought it would be right to give quick advice as we progressed, you know, like a mentor. Apparently I'm a jerk.
He died on the last boss and yet it didn't even matter because I healed the dps with Aurora when I could and used pots to heal myself. It's people like this that remind me of when I was levelling BLM back in SB, I wasn't rude like this guy but I was still dismissive of advice because I just wanted to get it to 70. I think back on that moment and cringe every time, especially since I love playing BLM these days. Hopefully this guy has his moment of clarity in the future and realizes what a tosser he was.