That old saying the old timers have about “don’t shlt where you eat” generally holds true. Legal is not the issue.
Workplace relationships are generally unavoidable, but when they involve an imbalance of power, there can be trouble aplenty.
Not to mention possible future accusations of harassment. I’ve had a few in the past and was lucky, and actually ended up getting married on my last one, but I was also lucky and also didn’t harass anyone.
I’ve also seen a couple of guys lose careeers because of workplace relationships.
I haven’t read any details about Les, but he just sounds like a horny old dude that should have done his pūssy hunting elsewhere. Bad idea to do it in the workplace. And if he was actually harassing the women, shame on him.