It's a law being proposed in the US. It's a problem here. Just out of curiosity, where are you from?

The proposed law doesn't prohibit you from sending emails. It prohibits employers from retaliating against employees who don't respond to the emails. It doesn't prohibit employees from responding to emails. It also allows your job to define when your "normal work hours" are, so if you work at 2 AM and that's when your office is open, you can expect people there and responding

It's super great that your work experience does not intrude upon your life. For many people in the US it does, and they feel like they cannot do anything except accept this intrusion. This law allows them to, like you, not touch their work emails when they're not at work.