Odd, but correct. It's a heterological issue, where maximal (not total) diversity is achieved by getting everyone to agree on the value of respecting each other's choices as long as no harm is done.

For an example in the political realm, see Popper's Paradox of Tolerance: https://en.wikipedia.org/wiki/Paradox_of_tolerance, aka, why we shouldn't tolerate neo-nazis, white supremacists, etc.