I'm pretty sure you're right on that last bit, but I don't think that wouldn't be reflecting the reality in UK or Spain, either. People are generally pretty quick to get into an "us vs them" mode when threatened, and, once there, will come up with increasingly ludicrous justifications even for the nastiest stuff.

And yes, in Israel right now it's probably somewhat affected by social (and sometimes legal) consequences of dissent... but those very social consequences are in and of themselves indicative of supermajority support. Point being, even if it is, say, 65% rather than 80%, that still means that opposition has no power, and so nothing is really in its hands at the moment.