I think their goal is a little different? Skimming the recipes it looks like they are trying to solve the problem of “if you’re cooking a dish, how can you maximize the number of people who can eat it?” But the more you combine lots of things into a single dish the more likely you are to be combining something someone could have eaten with something they can’t. By giving up on it being a single dish, the two meals I give above should work for a larger fraction of people.
This is exactly the concept of universal meals https://www.pcrm.org/universalmeals You will find more ideas and even full recipes on their website
I think their goal is a little different? Skimming the recipes it looks like they are trying to solve the problem of “if you’re cooking a dish, how can you maximize the number of people who can eat it?” But the more you combine lots of things into a single dish the more likely you are to be combining something someone could have eaten with something they can’t. By giving up on it being a single dish, the two meals I give above should work for a larger fraction of people.