Your premise is false, and you know it.
Scientists are not the ones who cling to pet explanations against all contradictory evidence. All scientists have been taught that all science is provisional. If they stray from that dictum, they done screwn up. Most scientists will fight very hard against an upstart model in support of a comfortable model which has been shown to function well. However, those same scientists will accept such a new model once it has been shown under extensive trial to function better than the one they defended.
No, scientists accept new models only through a process of attribiton where the old believers die off and are replaced with the new believers.