Exactly. The two agencies that talk about trimix shallower than 130 ft are technical dive agencies that don't advocate diving with air ever. And I don't know this, but I would assume they allow 32% nitrox to 110 ft, then advocate helium blends deeper. Am I wrong about that, do they now say that the MOD for 32% is 100 ft? It's not a huge difference, I realize.
But the larger point is that these agencies are not at all the mainstream for diving in general, that would be the recreational agencies. Regardless of what any of us think about PADI, NAUI, SDI, etc....the fact is that millions of successful dives to 130ft on air have been sanctioned by these recreational agencies. So it's not out of line at all to consider the use of helium for all dives deeper than 100ft to be unusually conservative and out of the mainstream, which is what I said was my opinion in my first post. Not that it's 'wrong' or 'foolish' just that for me, it's very conservative. I am perfectly happy diving air to recreational limits (130ft) as have been thousands and thousands and thousands of other divers for decades. They're not all dropping dead.
Technical diving, that's a different story. Those are longer and/or deeper dives or in some other way much more challenging, and in those cases it makes sense to adhere completely with whatever practices the technical training recommends.