I don't dislike the animation style but I wondered why they didn't just use in-game assets/models to make the animated parts? ( ●´ω｀●)ゞ ~?
They could have just exported the character models out of the game and animated them during the out-of-game segments of the guides. There are quiet a few content creators who do that for things like shorts and MMDs.

I also dislike that they didn't upload/post them in order of episode and language. That's going to be confusing/annoying for any newbie to look through. o(*´д`*)o