A smart line in this show about racism and old people

There is one episode where Dev has to meet the granny of his girlfriend,and before to meet her he is a little worried about her being racist. Then he meets her and sees that she is cool with his race and very anti-racist. When she notices that he is surprised by this,she tells him "What? Were you supposing that i was racist just because i am old?". This line is very smart because it subverts a stupid stereotype. Usually in tv shows some "woke" writers write lines about old people being racist and they feel alternative and satyrical doing that. They dont realize they are just perpetuating a stereotype in that way. Master of None subverted that stereotype in a brilliant way.