Despite TLS, filtering is easier to set up now than it was in 1998. You might have to block some apps in the short term, but if you suggest apps can avoid age verification if they stop pinning certificates then they'll jump at the option.

Consolidation is the only tricky part that's new.

Filtering has never been easy or practical for the general public. But the situation has become much worse.

In 1998 it was easy for a family to have no computer at all, or to put their single computer in the living room where it could be supervised. Internet use was limited because it tied up the phone line. These factors made it easy for parents to supervise their children.

Today, computers are everywhere, fit in your pocket, and its very easy to get online. Even if you don't buy any computer for your children (which is hard, because your children will tell you that they're getting bullied and socially ostracized, which probably won't even be a lie!) they will probably be given a computer by their school and any filters on that computer will inevitability be circumvented. And even if that doesn't happen, they can trade or buy one of their peers old phones and use that on free WiFi to access the internet without you knowing it. Are you going to thoroughly search their belongings every week? If you do, they'll know and find ways to hide it anyway.

And yes, I know kids used to procure and hide porno mags. What they have access to on the internet is a lot more extreme than a tattered playboy.