If it's political, there's a good chance it gets flagged. The problem is pretty much everything is political when you have a government that sticks it's grubby little fingers where it shouldn't.
I prefer HN for higher quality discussions. When I say posts which are pure political flame wars I (and many others) flag the post. Reddit is full of low information discussions. There's no need to also duplicate those posts here.
Everything is not political, and this statement itself is flamebait. Take a look at posts on the current homepage. Most are pure tech with no politics. Some are political with a tech angle but not flame wars.