I don't recall ever hearing a warning about using a 12-34 on a road hub, and, I have seen plenty of people do it. I don't think the "massive" torque of one gear inch is going to matter.
Originally Posted by
ThermionicScott
If you think the quoted text is marketing hype, you're reading it far differently than intended -- which is that the road hubs (in particular the ratchet mechanism) are about as strong as they need to be for smaller cogs, and 36T pushes them past their design.