The writing speaks for itself. Worse than most fan fiction.
There is nothing "progressive" about this. If by "progressive" people mean stereotypical, generalization and completely shallow characters, then sure, this is "progressive".
It's also not "inclusive". It doesn't include unique individuals and personalities. In fact, each character is merely there to represent the stereotype of an identity, and not an individual. This is the exact opposite of how I would imagine most parents want their children to see the world. No longer do we have individual personalities, but our personalities are decided by our ethnicity and other such representative traits.
Instead of giving the characters names, they might just as well have labeled them "Hot tempered Latina", "strong black female", "Kind and gentle red haired kid", "Crazy and quirky squirrel girl..." Ok, Squirrel Girl might be the one character who's comic version is actually MUCH MUCH better than the animated version. And of all the characters, Squirrel Girl might be the only one in this who actually has any semblance of individual personality. But my guess is because she has a giant squirrel tail, so they didn't know what stereotypical box to shove her in.
Really, if you want your kids growing up dumber and seeing the world as populated by representative stereotypes, then you will love this piece of hot garbage.