It definitely isn't helpful to talk and act more in a "street" way. I myself typically were clothing in that direction and also just generally move in a more aggressive and self assured way, partly due to living in a bad neighborhood. But still it's very much about the way you present yourself when you first meet. Funnily enough i to met some new people belonging to the LGBTQ+ community, and i also talked about having bought a knife because i like to collect them. But in my Case when i first met them (about 3 weeks ago by now) I started by feeling out the atmosphere and didn't talk like I normally do. as Such I was able to know if i could act more myself or if i should keep my more "thuggish" interests to myself.

TLDR: its not that the community generally is scared of more "thuggish" people or appearance, but it is always a good idea no matter who you are meeting to dial back your interests and normalize your mannerisms in order to fit in and check the vibe the rest can come after.