Tough but who cares, the student has no fundamental right to get what they want from the professor. Professors are under no obligation to write letters for their students and requiring that they do smacks too much of big government.
Now that it's public the attention seeking student will find plenty of similarly publicity seeking universities willing to take her regardless of her qualifications. And the professor will be avoided by any students who want to study in Israel in the future. That's the market at work and a better outcome all around, than the government mandating behavior.
Granted, your point is valid, but that’s NOT the issue here.
The issue is that, right in the article itself, the professor states that he would “gladly provide her a letter for any other college that is NOT in Israel.”
THAT is the issue, NOT any sense of entitlement on the student’s part. Were I in the same situation, my response to the professor in question would be: “You know what? I’m good. With an attitude like yours, I’d just as soon NOT have someone like you on my CV.”
THAT is what I see as the main issue here.