So why are we still complaining about the "GOP-e" if the last house cleaning was so successful?
First off: in my experience (mostly from TOS) there's a high correlation among the people who complain about the "GOP-e," and the ones who vote for Trump. It's a mindless, meaningless perjorative -- a substitute for thought and action.
The person who yaps unendingly about the "GOP-e" is a waste of time. I'd much rather spend my time talking to somebody who can offer fresh and insightful political analyses.
I didn't say the last house cleaning was successful (as in, good enough to last a thousand years?), I just said it happened. I'd posit that the main reason for the present decline is that modern Republicans use the words of the Reagan revolution without understanding the philosophy underlying them. Our elected representatives are too often depressingly shallow.
I'd be more worried if the party did no house cleaning at all... wouldn't you?