Even if I did agree, the implementations being rolled out present far more danger to adults than requiring an ID to enter a physical establishment ever could. Internet ID systems are rife for political abuse for example, and requiring age attestation at the OS level endangers general purpose computing, adds yet more hoops for free open source OS projects to jump through, and risks making FOSS OSes illegal to use for those who need an escape hatch from their commercial counterparts the most.
And for reference, when I was talking about my personal experience, I wasn't talking about 80's. More like mid- to late- 00's Russia. The internet was already quite a cesspool at the time, the local IRL even more so. Just I wasn't interested. Once a teen is interested in getting into the edgy stuff there is no amount of regulation can stop them.
That's approximately my whole point. We have zoning laws. We have age verification laws. We have lots of ordinances about what is and isn't appropriate in public and around children and similar. You can't open a strip club across the street from a public school and I think that's a very good thing.
The vast global unfiltered internet is increasingly pervading our lives. I think it is entirely reasonable to enact minimal regulation that stems the tide with respect to a narrowly defined goal.