No, the people who say they now may favor Trump are still Democrats accustomed to voting straight Democrat tickets.
It’s the trend and direction that matters. Black citizens are tired of being taken for a ride by democrat plantation overseers, taken for granted, and played for fools. Lots of black citizens are naturally conservative - they have a home with us...
But they are not all zombies voting D no matter what. There is an increasingly large number of black Americans who ARE beginning to think critically about what the Democrats have done to them for decades.
In 2012, 87% of black men voted for Clinton over Romney (5% of voters). For black women, it was 96% (8% of voters).
In 2016, 82% and 94% respectively.
Trump has doubled his support among black voters from the mid teens to the mid 30s. If he can convince just 20% of them to vote for him, it would be a major swing force in the election.