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.
Politics is defined as the way a system of multiple agents (typically humans) with conflicting goals, resolves to one outcome. That's pretty much everything. Almost all of economics, for example, is politics. API design is politics. UI design is politics. Putting /active behind a footer link is politics. Everything any government does is politics (or the government wouldn't have to do it). Every dispute is politics. There are a few things that are not politics, such as the colour of the sky, but almost everything humans make involves politics. The number of spokes in a wheel is politics, since the manufacturer wants as few as they can get away with. All news relates to politics.