But everyone is getting funding for collecting new and looking at existing data and thinking of new ways to validate that our climate models can be trusted. If they happen to find evidence that disagrees with the established theory they're in great luck because surprising results get published whereas confirming what we know lands in third tier journals.
Just having the mindset of "we need to validate this" isn't enough. Having the mindset of trying to disprove a theory encourages people to look in new areas. Diversity of thought is important because a monoculture stalls innovation and creativity.