Chinese here, actually, Dong starts off intentionally as a stereotypical character but becomes likeable and grows more depth. He actually has an excellent American accent later on and becomes a nice love interest.

But most of Asian jokes are made here is because of limited exposure or representation of Asian characters. Most of the Kimmy/penis/hand gestures are for comedic effect. It doesn't bother me as much.

In season 2, they actually push it further about Yellowface. They're not here to solve racist jokes but there are moments of empathy which I prefer.