If I didn't want to hear anything about these people's lives, I wouldn't have friended them in the first place. I don't want to have to block all of their posts just so that I don't have to deal with their obnoxiously-expressed views.
Ultimately, I think the norm of people posting political things on Facebook will go away--or at least, the only people being obnoxiously political on Facebook will be the same people who are obnoxiously political in real life. In the mean time, it's pretty annoying.
Less work than it sounds like. And as you say, bad for them, good for us.
It's not a left / right... trump / anything else item like you seem to be making (the original person gave an example, you seem to be taking his example personally).
The request seems pretty simple - give people a way to categorize the content they post and then give the friends a way to filter what comes into their daily stream of stuff by those categories.