Bobr

Well, you raise a valid point, it’s also bad of course.
It’s just that “forcing you to do a thing (a physical labor) you do not want to do” and “forcing you to give up a part of your salary” are different things.

Or is it just being forced to directly do morally abhorrent things?

Not just “morally abhorrent things”, any forced labor is wrong.

It is abuse and violation of person’s freedom and dignity. It (and people supporting it) should be fought by any means necessary.