Evidence of a receptor agonist having some therapeutic effect would unfortunately not be evidence of gene therapy cure potential. Or protein therapy, or aroma therapy. It would be evidence of a receptor agonist having some therapeutic effect. :-)
Her reason to be "excited" is the same as other researchers' in other fields, using other drugs. We want to believe it's because of something more, but citing excitement as evidence would be nonsense. That's the effect of confirmation bias. Her comments are, simply, common.