Idea: Perhaps animal rights activists could accomplish their goals more efficiently by promoting powder based foods along the lines of Soylent.

It isn't hard to make a cheaper soy based version, and the energy and cognitive benefits appear to still be there. Also, you don't have to directly sell people on the values shift where animal suffering matters in the same way human suffering does, rather you can put them in a position where they no longer feel obliged to defend animal suffering as less significant than human suffering because they just happen to no longer be eating animals.

It appears to have other utilitarian benefits as well, which is part of what makes it a potentially easier sell than ethically motivated veganism.

Speculatively (but reasonably, given the available anecdotal evidence): Higher average IQ in the population (which causes disproportionate economic gains relative to the individual economic benefit of higher IQ), higher economic productivity due to less sleep requirement and better energy levels, easier weight loss due to less exercise resistance.

Less speculatively: Reduced shipping costs (hence CO2) due to lack of water weight for the dry material, reduced heart attack rates due to increased oat flour and olive oil consumption, reduced food preparation time, more balanced/consistent nutrient intake.