He's pandering to MAGA which makes him one. That said, its ingenious though from a music business point of view. I don't know anything about country music. I don't know how famous he was prior to the song but one thing for sure, his name is being mentioned within groups it wouldn't have before.
At some point it will come back and bite him in the ass. Kid Rock is doing very small venues. He won't be able to do capacity stadiums any more.
The most successful country stars people have heard off came off like good ol boys who liked everyone and were fair minded. More likely to stop a lynching than to encourage one. Whether it was true or not.