Sounds like they're pretty much just requiring anyone who's creating any sort of business or money generating(profit or not) to register with a business ID. I don't really see anything wrong with that. Here in the US it cost's less than $10.
I'm sure there are more things in the law which may be unfair but it's not all posted so we can't make a valid judgement against it.
I still think the Greece thing beats this law 10X over and back again.