No you didn't. You said:
The GOP has ceased to function as the voice of its base, and therefore there is no need for the GOP.
The GOP IS the base....so why are you done with the voters?
If you think the GOP is the base, then there is nothing anyone can say to you. John McCain was vociferously opposed by the GOP base, and the only eventual support he got was because of Sarah Palin. Mitt Romney was opposed by the base, and he got his clock cleaned by someone he should have dominated without breaking a sweat. The base did not select either McCain or Romney, but the GOPe did, and shoved them down our throats. If the GOP truly represented the voice of its base, it would embrace Trump, who was the choice of the base (i.e., those poor schlubs who have for years pulled the lever for the mediocrities foisted upon them by the GOP; now, the base has had enough).