It should not be enough to deflect blame after publicly mocking an employee.

Elon is not a child, he is responsible for his actions.

“I’m sorry I acted badly” is very different than “I’m sorry someone else misled me”

One doesn’t take on any blame himself and doesn’t acknowledge his bad behaviour.

So yes , this is not enough because it’s just him eating crow while trying to save face. He hasn’t actually apologized for the actual issue.

Because it's a repeating pattern from Musk. Maybe he should learn from past mistakes instead of publicly posting something based on hearsay

For me an apology (regardless of who makes it, this is not a special standard I hold just for Elon Musk) is taking responsibility both for the action and then taking steps to help address the consequences. Pointing to how it was someone else's fault is at best a deflection, it doesn't take any responsibility nor try to adress the harm.