To be honest, I think it depends whether the writer seems to be prioritising the story or the message and I can easily get irritated even by messages I agree with if they seem to be over-bearing, sledge-hammery and generally thoughtlessly conveyed.

I can't say I've ever sought out an author because I agreed with their politics, although I have occasionally sought them out because I enjoyed non-fiction by them which is similar, though not quite the same.