If African-Americans (as opposed to native African immigrants or black Caribbean/Latino immigrants) ever swing towards the Republicans, or a particular Republican candidate, they will do so as a group, because that's how they do things. The Democrats appear to be aware of this, which is likely one of the main reasons they try to keep them dependent on the government while yelling about "racism, police brutality, and white supremacy" ad nauseum.
Pandering like Trump is doing won’t achieve this.
What MIGHT is hammering on the vaccine mandates. By and large they hate this more than the whites do and the “consciousness” segment of their group seems to be exploding lately.