It strikes me that this hobby (it ain't a sport, guys, chill,) is better if it's more inclusive, not less. If you keep the different kinds of caches clearly separated, people can use their taste to visit only those sorts of caches they like, and there should be 'something for everyone'. On the other hand, if you don't support a kind of cache, you are, in effect, limiting access.
If a GPS is involved and there's an easy way to categorize it, it ought to be allowed and the category ought to be supported.
Some people love multicaches, some never bother. Should we delete multicaches because some people don't like them?
Substituted whatever you don't like for 'multicache'...