The question is how much is hand drawn? In the context of animators 20 years ago talking about "save 2d" they were talking about animation on twos (or even ones or threes).

Nowadays with hand drawn stuff you're mostly seeing keyframe work being done and the computer doing all of the heavy lifting with inbetweening with maybe some tweaking here and there by junior animators.

The tools are good enough now where it doesn't even look like shitty Flash animation anymore.

Also don't know what you're trying to show me with this 10 minute video. There's maybe 15 seconds of animation work being done this whole video? I see storyboarding and background painting and audio work but this shows shockingly little animation process...(and what I can see clearly is someone drawing keys...)