I checked the poster’s link to hebrew books and I read the teshuvah by the Debreciner Rov zzl. Indeed, the debreciner Rov is scathing about television and he considers it a terrible sin. However, when you check the “mareh mekomos” in the Shulchan Aruch (Orach Chaim 53, s’eif 25), you find that the reason to fire a baal tefilla is only for very serious aveiras- (relations with a non-jew or being a mosser). The debreciner Rov zzl may think that televsion is on the same level but I daresay that this might be extreme.
The halocho of firing a baal tefillah who sings “shirei agovim” means very specifically that he sings songs that are sung for avoidah zoroh and that he sings them exactly as the do their places of worship. (think georgian chant for kedusha….)
To emulate the Debreciner Rov zzl , you have to assume that whole generations of good jews are possul…..not likely to happen!