while I agree with the sentiment. what if someone just sloppily hand-coded an insecure docker container, should you be able to kick that off too? I fear security isn't a good baseline to decide if a project should be hosted because security is a gradient and it becomes very subjective to say what constitutes secure. following that, would you give remediation opportunities for hand-coded insecure projects? It's a can of worms.
I would argue that they can argue it purely from a capacity perspective.
They can estimate the scale of handwritten code growing over a period of time, but not the scale of AI written code scaling, meaning their platform cannot anticipate the scale and therefore it is unsustainable. And at that point the scale of security awareness as a whole can be considered, e.g. "how many attack surfaces, e.g. repos, are we hosting?" vs "how many of our repos are insecure?"