No..
social media mindsick people hate hindi, north Indians but generally it safe as pan India being tourist specially..
For the SM ppl north India specially up Bihar is worse but in reality tamilians visit more than any south state to north India specially kashi vishwanath.. (lord Shiva temples)..
There will be language barrier a little bit as in Bengaluru or Hyderabad its not...
more... big..
Try to speak in English as even road side vendors speak good English for basic conversation..
If you are visiting as a tourist..
Try to book everything in advance like traveling tickets, hotels etc..