>The legislation should require anonymous or pseudonymous proof-of-age
NO. It really shouldn't. I will not comply. Porn sites can require this shit, but not the rest of the internet. Social media, dating websites, that's up to the users. If kids are on there, that's on the parents. Do your job, be the parent. I'm not going to let lazy good for nothing parents ruin the internet for everyone else.
Yeah I agree, forcing large websites to respect client side parental control settings is better (let the OS/browser set a request header with the age bracket that the website uses)