Don't use that expression. You're better than that :-)

I do base this on my own personal experience. I've arrived alone and with colleagues both more than 3 hours ahead (based on nervousness of missing flight by various people). Arriving early, they chose to ask us a lot of questions about our passports, even before they let us through. As for the extra security measures, I've been flagged sometimes, and other times I've gone straight through. There are also a number of additional security queues, and the one you get is determined by the sticker they put on your passport. Different queues go at different speeds as far as I can tell. They do also make a point of asking at the security queue when your flight is, and looking at your boarding passes. They let people jump the queue if the extra security is going to make them miss the flight. They don't get to skip the security though.

By your reckoning I've been judged both low and high risk on a number of occasions. Same person, same passport. The only correlation is the times I've been flagged for extra security is when I've had more time to spare.
Of course, they're not going to do it entirely based on time, as that would defeat the point of the added security. But they will also not want people lingering around having missed a plane. After all they're trying to promote the place as a tourist destination.

Personally I can't stand TLV. I wouldn't mind the extra security if the airport was a great place to be once you're through. But it isn't.