Which would be fine if they were calling themselves mathematicians, we can debate if their ideas are more/less worthy of funding vs all the other mathematicians working on interesting math that might or might not be useful. However when they call themselves physicists we demand they prove they are creating useful physics. There are other areas of study in Physics that are producing results and thus seem more worthy of funding.

Remember resources are limited. We cannot fund everyone who wants it. Society needs to make choices, we are generally okay with a bit of "interesting but unlikely to produce anything important", but most of what we fund needs a return on investment.