Just because everyone can now create an XML schema because of all the easy to use GUI tools, doesn't mean that everyone should create XML schemas.
Elitism? No. Most of the people in my experience who are enamoured by the glitzy tools for XML schema development don't have the faintest notion of the fire they are playing with. The wouldn't know a third normal form or an extensible coding system or a cost-center tag, if it jumped up and kissed them.
I can use AutoCAD but I wouldn't dream of designing a house because I don't know enough about houses or building or any of that stuff.