Yes - grew up there from age 3 - 22, moved to bay area after that. Houston has no zoning so it’s real estate will always be sustainable, I’m honestly not sure what is going on in Midland besides more oil & gas jobs? But that area along with Houston as a whole goes in cycles iwth the energy industry - either booming or a recession, Houston doesn’t really react to that as much as Midland because the only thing in Midland is that industry where as at least Houston has tons of other jobs.
Diversity is neither a good thing nor a bad thing. A place can be extremely diverse and heaven. Some other place can be extremely diverse and hell like. Don’t give credit to a place just because it’s diverse.
Texas is still Texas. Diversity is a meaningless cliche. Houston is unlivable half the year. Austin is still a wannabe. But compared to Cleveland and the rust belt Texas is a Mecca for middle America.