It reminds me that the show BoJack Horseman was created on Adobe Flash [1]. The creator calls himself an "Old School Flash Hack" in a same vibe like the OP.
Don't know if the latest seasons they still used Flash, maybe yes, because they just exported to video? Migrate to other tool maybe was a pain and/or changed some illustration aesthetics. Not sure if a project like that can migrate properly to Adobe Animate [2], the Flash successor.
I believe that Flash was a tool with a friendly UI/UX for casual animators but also many advanced features for pros, that's why was so popular and loved.
Don't know if the latest seasons they still used Flash, maybe yes, because they just exported to video? Migrate to other tool maybe was a pain and/or changed some illustration aesthetics. Not sure if a project like that can migrate properly to Adobe Animate [2], the Flash successor.
I believe that Flash was a tool with a friendly UI/UX for casual animators but also many advanced features for pros, that's why was so popular and loved.
[1] https://youtu.be/0KofIRvAr0M?t=626
[2] https://en.wikipedia.org/wiki/Adobe_Animate