I won't speak for all Telugus, but Hindi speakers using Urdu is downright disgusting and repulsive. A lot of Telugus in Andhra, see it as a language of Turakas i.e Muslims. One of the reason for conflict between the 2 Telugu states is that Telugu spoken in Telangana has influence of Urdu in it while Andhra Telugu has zero Urdu influence.
Also, at this point, it seems like an irreversible trend. This is one of the reasons why I'll never accept Hindi as pan-India language.
I'd never argue against Sanskrit as I would against Hindi.