Why do we need this?

We don’t need this.

It may be more common among certain job types, but I don’t think that makes it professional behavior to do so regardless of the type of work.

I agree with the sentiment, but if we’re going to make that argument based around professionalism, I would also have to argue that it’s not very professional to use that kind of language in a work setting.

So maybe this is a situation where both sides can grow.