If you've ever offered an online service, charging "the dollar" reduces a ton of spam/abuse you have to deal with.

I have been the service provider who had to paywall just to stop the spammers and you're right. But it's also true that kids will be collateral damage (or anyone without a credit card).

In my case, and it was the 90s, I took the time to setup a way to pay by calling a premium (1-900) for $1.49 number so the barrier to entry even for kids was still reasonable.

Maybe in modern day the equivalent is adding Google pay and Apple pay then you cover some kids at least (gift cards and such).

Quite the hassle for the provider, and it will turn away any person who cares about privacy. There's no way to win anymore.

If a parent can buy their kid a computer, they can pay 1 euro a month for a CDN in the rare case they need it. This is a bad argument.

I had trouble explaining to my parents what a BBS was. I wouldn't want to explain what a CDN is.

I think the point is that many HNer’s had parents who couldn’t or wouldn’t do “computer things”

Pay 1 Euro a month... or 1000s if their kid fucks up.