I think that is the opinion of a lot of people on FR. Unfortunately, it is these people who so liberally throw around the "RINO" label at everyone who doesn't quite fit their narrow, specialized view of the world. It's ironic -- the ones who castigate people as "Republican In Name Only," often are "Not Even In Name Only."
I use the "RINO" label for candidates who, with no executive or political experience of their own, do things like seek advisors who are in favor of repealing tax cuts.
I use the "RINO" label for candidates who have said they are ashamed to call themselves Republican.
I use the "RINO" label for candidates who donate money to Democrats.
I use the "RINO" label for candidates who seek the assistance of environmentalist wackos whose life's goal is to destroy the pork industry in America.
Don't you? And if not, why not?