I'm highly skeptical, needs some citations. In Kenya, Meru is one of the most fertile regions and it produces tons of bananas and other produce alongside khat.

I'm highly skeptical, needs some citations. In Kenya, Meru is one of the most fertile regions and it produces tons of bananas and other produce alongside khat. In any case, keep in mind that there are other "cash crops" besides khat (such as tea, coffee, pyrethrum, cotton) that have been (historically) more lucrative than growing food for large-scale farmers so this isn't something unique to khat.