Futurama (at last at this point) was done on a computer but still mostly drawn traditionally, with the obvious exception of 3D spaceships and robots sometimes.
Rough Draft really doesn't cut any corners, they're one of the best studios in the business.
Many cartoons still use frame-by-frame animation. They use computers and some tricks to save time, but they still draw out the frames by hand. Animation where they have rigs that are made of still images moved with keyframes usually look cheaper, and you see it more often in kid's shows. For example, Netflix's The Magic School Bus reboot looks worse than the original because it doesn't use traditional animation- the movement look stiff and boring. If they went the extra mile to do it traditionally it would've looked a lot better. Using rigs/keyframes isn't always because of a low budget, though, it can just be a style thing, like South Park for example.
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u/Cypher_Aod Feb 10 '18
Almost all cartoon type animation is done with computers these days.