It was a misunderstanding
Usually, when someone types profanity into the chat, there’s no excusing it. They messed up and probably have to apologize. In this rare instance, though, the viewer says that while they did say “blow me” in Pokimane’s chat, it wasn’t them being shitty at all. Instead, they were simply pointing out how much something she said sounded like those words.
When Pokimane went back and looked at the footage, she ended up agreeing with the viewer.