Why do people hate T-series so much? I see nothing wrong with them , so far..

Because YouTube is a platform for people and creators, not huge corporate companies. So if T-Series were to take that spot from PewDiePie, instead of having an actual person at the top like it should be, we would have some huge corporate record company. That's why people are mad at them because that would just take away what YouTube is.

because they're bad

It’s just coz they are beating PewDiePir and they are Towl heads

Sub bots and they are a company.