So, you are saying that his “anti- xian” view made him “anti-American”?
He was exercising his American right to free speech AND his right to worship as he saw fit. As called out in The Bill of Rights, “the right to worship” does not define which to, or how to, worship!
I am opinining on what I read, that Heinlein wrote.
I read all of Heinlein I could find. He was a great writer.
But, he had his weaknesses, and they contributed to the current situation we find ourselves in.
Heinlein influenced a lot of people. It is what writers do.
Many things he pushed as factual, were simply his opinion.
On balance, it is hard to say if he helped or harmed the Republic more.