This is a good point, although your snarky presentation does you and it disservice. I have clarified in the document as follows:

You now might protest “what about following the most difficulty chain and Emergent Consensus?” First of all, exchanges represent many users so an exchange would want to remain on a minority fork to pay out those users who cling to it. Second, by using “invalidateblock” Bitcoin Unlimited allows every user to individually choose what he/she wants to do. BU is about giving users the power to make choices rather than making it for them. And finally, this strategy allows users to make this decision in the future. This is important because while I would tend to choose to follow the hash majority fork, there may be compelling reasons why you would follow both. The most compelling reason is if the 2 forks have each inhabited separate economic niches — for example, if the 1MB chain became a settlement layer and the >1MB chain becomes peer-2-peer digital money. I personally think that the >1MB chain can outcompete the 1MB chain in all ways, but if this possibility occurs we should not ignore it. It is better for today’s Bitcoin users if Bitcoin expands into 2 incompatible economic niches than if an altcoin does because in the former case Bitcoin users will have value on both chains.