I know there are folks that love themselves some bokeh. I'm not one of them. Ansel Adams and the rest of the f64 school have got to be rolling in their graves.
Three points:
1. AFAIK, the f/64 school shot landscape, where it makes sense to have everything in focus. The RF 70-135mm would be used for portraiture, where blurring the background is a lot more useful.
2. Faster aperture on wide lenses can be useful for star trails, AFAIK, something else the f/64 school didn't shoot.
3. f/64 on MF to LF cameras has the depth of field of f/8 to f/16 on FF. I'll fall off my chair if the f/2 trinity's aperture wouldn't close as far as f/16, probably f/22.
Minimum $9,000 for this "trinity" that doesn't go past 135mm doesn't tempt me. I'd much rather have a big white if I could afford that kind of money.
You don't have to buy an f/2 lens. I'm not going to.