In that way that’s true but look at the fact that Reagan won huge landslides while Dems won big in Congress. Look at how often states changed hands during the decade .Look at the fact that Reagan’s support in both his elections was pretty uniform across the nation.
And during the 1980s probably the largest tax reform bill passed on bipartisan consensus
Reagan won big landslides because of the economy. Most voters didn't even know what Reagan was campaigning on and the few who did didn't even like his policies.
Even then he won the largest electoral landslides since FDR in the 1930s (If you average out both his wins ).
Even IKE despite being a war hero and also presiding over a great economy didn’t win as large of a win
Reagan put an end to the stagflation of the 1970s by measures that lowered real pay to workers and cut taxes for economic elites. He did what neither Ford nor Carter could ever succeed at, which was to lower expectations. The Reagan economy was the economy of the shopping mall and the fast-food restaurant, both of which got infusions of cheap but competent workers who might have wished to do something else. So if your loathsome, low-paying job was fully inadequate -- get another such job! Such created wealth without creating consumer demand.