Exactly, there have been loads of tools over time to make software development easier - like Dreamweaver and Frontpage to build websites without coding, or low/no-code platforms to click and drag software together, or all frameworks ever, or libraries that solve issues that often take time - and I'm sure they've had a cumulative effect in developer productivity and / or software quality.

But there's not one tool there that triggered a major boost in output or number of apps / libraries / products created - unless I missed something.

Sure, total output has increased, especially since the early 2010's thanks to both Github becoming the social network of software development, and (arguably) Node / JS becoming one of the most popular languages/runtimes out there attracting a lot of developers to publish a lot of tools. But that's not down to productivity or output boosting developments.

I think age verification laws are good in principle - there's a lot of stuff on the internet that people should be protected from. But it's the manner of age verification that is the issue.

The EU has zero knowledge proof age verification systems, e.g. through your bank, which are secure and don't involve sending a copy of your ID and / or face scan to a dodgy US based 3rd party.