It's not only CTFs. I strongly believe being a programmer at a gamejam like Ludum Dare, or hackathons is pretty much over.

Ludum Dare 59 just wrapped up last week, and both first and second place were won by developers using "Agentic" coding tools, something the community there is still discussing:

https://ldjam.com/events/ludum-dare/59/setidream/about-ai-ar...

For what it's worth, the non-AI-coded entries were still quite good relative to the winners, so it's not so obvious that AI use confers an unbeatable advantage.