He has written some books that I love.
I will continue to read them unless all of his new books are preachy.
I like military science fiction too, so I end up reading a lot of stuff written by right-wing fanatics (looking at you, Mr. Ringo). When the book is good it is good. When it is polemic and tedious, I try to get through it or I set it down.
Showing support = boycotting? I hated it when those assholes did it to the Dixie Chicks.