I hired some movers once, these guys really 'hustled'; they moved quickly and worked efficiently. You can say this of a sports team as well. It is a colloquialism with good and bad connotations. Someone who has hustles can be seen as getting things done. The negative is a 'hustler' someone who gambles on games of skill pretending they're worse than they are to draw people in[1] ie crooks or con artists.
Is the term "hustle" not extremely negative to you?
Merriam-Webster defines "hustle" as to push or shove someone in a rude way.
Urban Dictionary says "Anythin you need to do to make money... be it sellin cars, drugs, ya body. If you makin money, you hustlin."
Obviously, you don't seem to think that the word "hustle" has negative connotations, so I'm wondering how you came to that view?