And we care about the GOP why?
Because virtually every public officials who is fighting for conservative issues is a Republican. No, not all Republicans are conservative, but as far as electoral politics are concerned. virtually all conservatives are Republicans.
There are always people who would prefer to lose gloriously with ideological purity intact. There is already a party for these people: Libertarian. If you can't abide sharing a party with people who only agree with you 70 percent of the time, go be a Libertarian and glory in your one percent of the vote.
I am conservative and wish the party were more so. But I am not in favor of blood purges. If we want to advance a conservative agenda, we ultimately have to win elections.