I recall Steven Schneider and others of his ilk at NCAR say the same thing 30 years ago when they got their brand new CRAY.
Models are only as good as their algorithms and their data. Both continue to get better, but are still woefully insufficient, in my view, to support predictive analyses.
Models and algorithms are always improving and getting much better at proving manmade global warming. In "science", it always helps to have a goal in mind, if that is what you want to prove.