I must admit that I think that more clarity is a good thing. Would asking someone on a date be considered an "unwanted sexual advance"?

Also, the term "unwanted" makes me wonder about the existence of a "wanted sexual advance".

I worry that this whole concept is too fraught with "gut feeling" decisions and that could cause injustice or liabilities.

It might be cleaner to say that romantic or sexual workplace relationships are forbidden and that extends to investors, contractors, suppliers, vendors, etc. if the relationship clause is violated, all the involved parties will be fired or banned from interacting with the company, with any owned shares seized.

Basically like zero-tolerance policies in public school applied to the business world. It's more harsh, but it's equally unfair to everyone.