I don't think it's specifically due to the toon-ish nature of the games. I think it's the overall direction MS is going with gamepass and it's studios. Outside it's tentpole titles (we all know the ones), all these new titles look like the indie games were used to since last generation. Artsy games, little mp games that you'd see insummer of arcade or as titles that might be peppered in-between the big AAA titles during a press event like E3, are now being marketed as if they're main attraction. People's expectation of what an "exclusive" is, what names like obsidian or ninja theory should provide with a big publisher like MS, isn't lining up at least for this show. These might have been fine if they filled the roles of previous events of yesteryear.
Gamepass isn't going to be filled with new big risky AAA titles, you're getting what you've always gotten just repackaged in subscription form - older games, indie games, and the tentpoles. Those studio acquisitions were for small studios, and at least for the time being, they're going to remain relatively small. If the goal is to 'execute and deliver' you can expect these games not to be today's standard of AAA. You can also expect the bigger titles to be chock full of microtransactions. For some this will be a hard pill to swallow when compared to Sony's particular path of big grandiose spectacle.
Based off this, Scarlett will have all the bells and whistles to really stay competitive with Sony when it comes to 3rd party titles...but not really to push Xbox studios to be some standard bearer. Gears and Forza can do that...and maybe their new Fable. But I think there is going to be divestment from big blockbuster games. To me it seems clear they want to train their users to view these smaller games as the entree instead of the appetizers.
Another thing that might have people a little bummed, is that games like grounded looked a little janky in the run animation. Meanwhile everwild is an artsy enigma...and we all know some have a aversion to artsy games.