Making it harder to do things makes it hard to do dumb or bad things as well as good things. Not everything government does is good. Americans generally prefer be protected from bad government at the expense of making good government less effective rather than enable good government to do things quickly and risk that it does things they consider bad.

I'm not sure how can you look at the US government and 2018 and say we need to enable these people to get more things done. I think the current administration is a relatively harmless (compared to alternatives) lesson in the importance of checks and balances and not concentrating too much power in one branch of government.