He is addressing a different problem that a certain section of America that used to be fringe, but is no longer, has had for a very long time.No signs Trump will address the real problems.
Actual issues that require systemic and institutional solutions are of no interest to him. Eg: Healthcare, Gun Violence, the Economy etc.,
Nor is he capable of working those problems
All of his major policies are about targeting certain people groups and ensuring institutions that protect them are either altered or undermined to make way for the targeting.
This is very easy to get behind under the guise of making the country great.