You're not wrong, but GitHub can only control what they can control. They cannot hold everyone at gun point and make them stop vibe coding. They also cannot shutdown Anthropic/OpenAI - you'll have to wait for their A/OAI's debts to come due for that one.

We might see real usage limits come to GH's free plan. TBH, I bet they're regretting their decision to allow unlimited private repos on the free plan, at least a bit.