Most people, regardless of language, use slang. Including myself. When it comes to acronym use though, I don't often use text acronyms. I understand most early ones, but newer ones pop up now and again.

I've heard 'what's good', but never a text acronym of wsg. After my daughter mentioned that, it made sense. (Although I proceeded to forget and you're reminding me again of what it means. Haha.)

"No disrespect" is something I think I would normally understand given some context, but this message is out of the blue from a stranger I've never interacted with. I honestly thought that if this message wasn't spam and I responded, they were going to be critical or rude about something and they were perhaps trying to soften the blow upfront. Ironically, that seems to be the opposite of what your suggesting. 🤷🏽

Language can be funny.