So I don't totally get the "cancelled too soon" argument. The OA should have not run to even 2 seasons.
There's a trend of not producing art or even something original, but producing "content." For example someone asked me if The Mandalorian is good. "It's star wars Content" I replied. "If you like star wars, and want Content, you'll like it." Is the plot novel? Is it original or compelling? No, but boy it's fun to see yoda puppet and more Content from the SW universe you've come to know and love!
A lot of these series may have run their creative course & while megafans want more "Content" it's the same thing as something being cancelled too soon, and most people aren't megafans.