“OU, Rabbanut, Triangle K, and maybe other hechsherim that I missed being mentioned going around the CR block a few times are apparently the reference point in this statement.”
I can’t tell if you’re truly uneducated on the topic, or if you’re purposely stacking your argument in a dishonest way. As you can see here, the Rabbanut is not comparable to the other hechshers you mention. By putting it in the same breath as the OU, you either don’t know what you’re talking about, or you’re trying to create a straw man argument. This is not a thread about the OU’s standards; as I said before, they are not comparable.
Saying the Rabbanut hechsher (alone) is borderline treif is not a chiddush or extreme statement at all. That’s completely mainstream. It’s a hechsher only for “traditional” Israelis. Nobody here should be seriously considering it.