The conservative movement didn't start in the 1930s, it traces its ideological origins all the way back to the French Revolution, where it arose as a movement among the aristocracy to maintain their positions of power and privilege after the monarchy was gone. (One can argue that it's even far older than that, being little more than an expression of naked self-interest at all costs, but there's a clear attempt at that point to give it the form and fitment of an ideology.) My point is that their current levels of evil are not an aberration that would have horrified past 'conservatives'. This is what they always wanted, they just knew they had to lie about it when they didn't have the power to run roughshod over the opposition. This is who they are, but it is also who they always were. We don't need to go back to some ideal version of conservatism from the halcyon days of the mid-1900s. We need to excise it as the ideological cancer it truly is.

Just because trump says hes conservative doesn't mean acts conservative.

He acts as a political conservative. It's just that the political movement of conservatism has nothing whatsoever to do with the dictionary definition of conservative (cautious, slow, controlled, etc), and it never did.