Not quite...
Also, the TV market is always different from the movie market. Most animated tv shows focus on syndication with a villainous or lesson-teaching plot that usually doesn't bring a lot to continuity.
Also movies have to go for a wider audience than tv shows as they cost a lot more and there is more riding on them. Adults as far as I know usually don't watch current animated Kids tv shows on TV (note the on TV part) and would rather be watching adult animation or the rare gem like Steven Universe or something. And so to fill the networks demographic like Disney Jr or Nickelodeon Jr or whatever they have to make appropriate content
Also, usually the more serious an animated movie gets (that isn't japanese) the worse it does at the box office. Look at Treasure Planet, Atlantis: The Lost Empire, Titan AE. If it doesn't have talking animals or a love story, most people seem to pass.
Reading that blogpost some things were agreeable and others were not or just twists in fallacies meant to garner cynicism. Most people don't like their childhood favorites to be remade, and that's mostly what this is...
It was marketed as TV Y-7. The Lion King was G. But guess what; so was Land Before Time. And I think it's easy to agree both were PG
Bah not sure what else I can say on the matter