Because forcing companies to not allow discriminatory practices or hostile work environments for protected classes is kind of the entire point (of the business oriented portions of those laws).

I’m having difficulty interpreting a more charitable reading of your post.

Edit: just noticed "one of". I’m morbidly curious, what are the other evil ramifications of civil rights laws.

No, I said it had an evil ramification. Laws can have both evil and good ramifications.

> what are the other evil ramifications of civil rights laws

I would say that the current legal environment of allowing companies to be sued successfully for "hostile environment" actions of their employees that they had nothing to do with and no foreknowledge of is another.