Trump is borrowing the Republican Party for his own personal purposes. He has appeared to embrace conservatism and evangelical Christians because they are a core part of the Republican Party
Neither conservatism not the Tea Party movement are going away. They haven't been hijacked, as some would say, by moderate (read liberal) Republicans or the Trumpists of 2016. While organizations may be taken over by people with a different set of principles than before, a set of principles cannot be hijacked.
The principles of limited government with restrained spending and reining in of government agencies and their regulations are not going anywhere. Neither is the blueprint for proper governance, our Constitution.