There's nothing wrong with wanting to look good. Working out, watching your diet, having a skincare routine, flossing. You know how many older dudes I know wish they'd taken care of their skin? Some things aren't feminine...it's just women have the common sense to engage in the act at a higher percentage.
It's wild how some dudes take pride in being slobs. "I still pull." ...like pulling women (often they're not even pulling attractive women) is the end all be all of life....and if your goal is to attract women, looking good helps. I don't know why people try to deny that looking good and having an in-shape body makes it easier to pull.
Even if you have a mouthpiece why would you make yourself work that hard to talk and woo yourself from 0-100, when you can just use your mouthpiece as a simple nudge.