Sure they could. They could have lined up a job or impulsively lashed out, or think enforcing the policy gives them cover. It’s the sort of thing I might do.
This is just a probability you may have a different weight on.
I keep hearing "maybe it was a rogue employee" or "maybe it was automation" about everything Twitter does lately... until Musk comes out and defends the thing. I don't know why the benefit of the doubt should be granted at this point.