According to this, it's not currently illegal. Blasphemy, however, is illegal and punishable by death. Furthermore, 62% of people polled would favor the death penalty for apostasy.
Also, I personally don't give a rat's behind if it's impolite to call someone an idiot for voting for Trump. But I haven't done that here on JetPunk and I try my best to make sure I don't, as difficult as it may be.
This is an example of the Typical Mind Fallacy, where people assume that other people think the same way they do.