Pretty clearly isn't trying to claim that it protects the bike, its just removing an alloy pole from the packweight for a cycle tourist.
To my mind the much bigger issue is that there is no obvious reinforcement to the material passing over the bar ends. If you have a windy day then even though the structure is stable, there WILL be movement at this contact point.
If the bars are even remotely like mine then it would only take a few nights to damage the material quite badly - if not puncture it entirely, making the entire tent potentially fail
(I spent years on rockclimbing and cross-country skiing trips in a tent much smaller and lower than this incidentally. for certain types of use this tent is great)