Earlier quoted context omitted.
What in particular is racist about it?
If you have watched the show and failed see why it is racist, then we need to give some anti-racist education. It is affirming the stereotype Indian males lack confidence with women. Raj can’t speak with women without the use of alcohol, the show constantly mocks his accent, worshipping of cows etc.
I wasn't even aware that was a stereotype, after knowing (very closely, with some!) and interacting with hundreds of Indian males in my life.
Lacking confidence with women is a pretty standard "nerd"/"geek" stereotype, though, which, given the title and subject matter the show deals with, is what I would assume they were going for. Were you ever upset that Leonard was often awkward with women? Sure, he didn't have the "unable to talk to women without alcohol" bit, but Leonard wasn't exactly a ladies' man. So it's ok to portray a white man as being awkward around women, but if it's an Indian man, it's racist?
Re: accent mocking: accents are fun and the confusion that they can cause can be funny!
I do recall references to cow worship, which was a bit insipid and not that funny, but... c'mon, racist? Gimme a break.