I get where you’re coming from, but the reason I disagree is because you’re assuming these people are acting in good faith. Why do they need a title?
Queer folk have always used symbols to distinguish ourselves and find others. We’re ~10% of the population and it’s necessary. Straight people do not commonly do so, and 100% of the people who feel the need to wear it like a badge are actually signaling their refusal to let the rest of us exist.
I, for one, would feel perfectly comfortable in an MMO with 90% straight people. (This is just called existing in public.) I would leave immediately if 90% of people wore a “Straight” title for no discernable reason.
She drinks wine while playing with her niece. He steals from cancer patients. It all evens out. /s