As someone who studiously avoided office politics on principle (to my detriment) until my latest company (where politics is crucial), I've observed the opposite. Information flow is a lot harder and less visible now, which makes politics even more important for making sure the right people hear the things you want them to.

It's true that certain types of politicking are harder now, since you can't charm people in the kitchenette or over lunch. But setting meetings and making promises and aligning others' incentives in a way that benefits you is a lot easier in an environment that cuts the non-politicker off from, eg, seeing people walk out of a meeting room and checking their calendars to see what they were meeting about.