My mother used the "people you may know" feature to connect with some of my friends. One is much more conservative than she, and she made some sort of smart remark on a political post of his. I sent him a private message and asked him to unfriend her. In the meantime, I logged into her Facebook and hid him from her timeline (and I'd do it again in a heartbeat). She never knew and he has since unfriended her.
I don't like political posts, but I can do just what the OP's friend can do, scroll on by. If someone is totally annoying with constant political posts, she can hide the person's posts while remaining Facebook friends. I've done that, too. It's really simple.