I clicked through half of those portals last month chasing a minor planet ephemeris — and frankly, I'm not surprised they're AI-resistant. The problem isn't that they're ancient; it's that they're designed by people who've never had to serve a bot, only humans who already know what they're looking for. A real AI agent would need to understand orbital mechanics just to submit the form, and at that point, you've basically already trained the thing.