Eventually, policies like these lead to “don’t hire employees in France”. At which point, no French employees are even bothered by employers on their free time again...

Ah, you say "don't hire employees in France" but it reads "don't grab slaves in France". If worker's rights are an issue for you, those people in France are better without your "job", thank you very much. There are many many other jobs without near-slavery conditions, luckily.

Yeah, "This guy is great but we will have a hard time contacting him spontaneously after hours so I guess it's back to the hiring pool!"

...is not a sentence that'd be said very often/ever.