They're not the same though. Your method will enable the system to interact meaningfully with an age gated internet. Blank will not. And I won't be interacting with an age gated internet...

I do. We're on it already. The whole system is slipping towards an age gated internet, and there is nothing we can do to stop it. That's the slope. There's nothing I can do to stop it, whether I'm I stay on or get off.

I don't believe that dropping my whole OS over a database field will change anything. It won't stop the devs who are concerned about their legal liability from being doing what they need to do to protect themselves. Some devs will comply, some will walk away from OSS, and some won't comply. But the bigger the project, the more corporate sponorship it relies on, the more certain it is going to be in the "comply" category, and the truth of that won't change because users push back.

Which is to say, I don't believe standing up and rejecting a DB field as a matter of principle will change anything, except to make my life harder.

My line in in the sand isn't about changing the course of the path we're on, it's about my own personal interactions with the system. And being forced to provide my age to interact with the internet is the bit I won't do. So I will stay with the inevitable creep towards that state until the last possible moment, in the hopes that somehow, I'm wrong, and we avoid this privacy nightmare we're heading towards. If and when it becomes impossible to interact without providing that data, then that's where I step off, even if it costs me half the internet.