Recent years have witnessed the boom of television and people today still
hashave mixed views on whether it has a positive or a negative influence on culture.
boom of television? or the boom of television viewers?
As for me, it damages culture.
... As for me, it has damaging effects on culture.
.... I too agree with you. It has done a great damage to the culture of my country already. :(
There is no denying that television, a form of mass media, is playing an increasingly important indispensable role in disseminating cultures and values due to its easily accessibility and availability.
.... this sentence is too long dear. Make it shorter and then your ideas would flow better.
. Besides, no matter ranging from advertisements to various television series, numerous cultural values embedded behind them.
.... this is again sounds pretty confusing. You better re-phrase this line.
However, the negative impacts on culture that brought by TV can also be
... if you say "justified", then it means that such impacts are ok. I think that is not what you wish to express.