What he did didn't deserve an ejection
That was some bullshit
It was not a judgement call. The rules simply states that if you do that you are ejected.
As a professional player, it is Alexanders JOB to know that and not do it.
So yes, he deserved the ejection.
One could argue that the rule is stupid, but that does not change the fact that he broke a rule that he should know meant a automatic ejection.