What piffle. Do you really think US diplomatic friends, Saudi Arabia. are going to take out a US citizen at their borders just because he might have a Jewish name but then again he might not. I am guessing it is equally common in German-speaking countries. Plus you don't get your passport stamped at the Israeli border. Israel has literally millions of tourists every year. Do you really think a tourist to the Holy Land is going to be marked as dead meat if he or she then ventures into Egypt for sightseeing? It is a crap theory.
Did you notice where I wrote "many Arab nations"? Well, Egypt is not one of those nations, for a variety of reasons. And yes, Israel stamps your passport on entry (I'm surprised you didn't know that if you claimed to have visited there) - even if you ask for it not to be stamped, they usually override that request. I know about these things. You do not.
(Oh, by the way: try crossing from Israel into Jordan or Syria (both of which are adjoining countries) using the passport with which you entered Israel. You'll find out just how........ easy..... it is.)
The hats worn today by various sects of Jews can be traced back to the Tatars who were reowned for their style of uniform and choice of weaponry. It is a historical fact that mainline Jewish sects in Israel have adopted the sartorial style of seventeenth century Warsaw. I dare say they do have their own name for it. In any case, Jews wear whatever they like without the need of obtaining a fake passport or changing their name. A Jewish friend of mine at school simply had a team of bodyguards.
Firstly, I don't care about your "Jewish friend at school", who (if this was the UK) either had very weathy/influential parents or had group security outside a synagogue.
Secondly, as I've already pointed out to you, your (alleged) experience of orthodox jewish men on an aircraft was ON AN AIRCRAFT HEADING TO ISRAEL. What is it about this that you cannot/will not understand? If you think orthodox jews would even make it past the check-in desk - let alone onto the aircraft and into the air - on a flight headed to (e.g.) Saudi Arabia, well...... words fail me......
And lastly, I know the history of headwear as it relates to orthodox jewish men. And not only do they "have their own name for it": it's a separate style of hat in its own right. It is not a cossack hat. Therefore you were wrong to claim it was a cossack hat. You were as wrong as if you'd claimed, for example, that the hat predominantly worn by men at the Henley Regatta is a straw Panama hat.
But hey ho. Another day, another dollar, huh?