The characters are ripoffs, no question... though frankly EVERY cartoon character looked like that at the time (all generic mice looked like Mickey, even before Walt did Oswald... Mickey was just the first mouse to have a name). But the subject matter is cliche. Compare it to the Fleischer color cartoon "Somewhere in Dreamland," which was basically the same thing, minus the Castor oil and references to the moon, and that came out later...Right, that's why people are calling it a rip off on YouTube. It's the equivalent of those rip offs of Thomas the Tank Engine, lol.
But I like watching these anyway, if only because it preserves the voices of people from so long ago.
At the risk of making a joke, a LOT of early CGI cartoons once they even discovered CG years before anyone realizes, same thing. Anytime a new technology comes out, everyone's hungry to use it. It takes a master to turn it into SOMETHING. I could easily say the same for Scanimation... but SS eventually stopped saying "WOW! Scanimation" and did something with it besides whirling things around.Reminds me of certain CGI films today which shall remain nameless, lol. Pioneering effects sure, but no substance.
Though I will say, with new CGI movies, it's more about being the next Dreamworks than playing around with stuff.