There's a secondary problem in that politics has been neutered quite a bit since the 1970s.
For all the bluff and bluster, there's a very strong consensus on the worldview of the "mainstream" of the major parties across the developed world. While Trump and Corbyn bucked that in their own parties, and Brexit showed the influence of the "extremists" of one party to get a referendum, that's still largely the case.
Whether 'left' or 'right' most parties have accepted a basic agreement of social liberalism combined with fiscal (and more important, monetary) conservatism. Within that, there's not much in the way of big ideas. Contrast back to the 1960s, where you could have Britain's Harold Wilson pledging to reform the country with scientific revolution, or LBJ's declaration of War on Poverty. Independent of whether those actually worked at what they set out to do, they at least articulated some kind of vision and grand goal, instead of the boring, rote, managerial style of modernity. The best skewering of this approach is from Britain in 2015, where Labour's approach was described as "Vote Labour and Win a Microwave" - it's not quite>The Britain that is going to be forged in the white heat of this [scientific] revolution will be no place for restrictive practices or for outdated methods on either side of industry.
Or to sum all that up in a snappier form: Political cartoons don't work unless you've got actual politics behind them. Otherwise you've just got Dilbert's pointy haired boss with better songs.