As I understood it, DonIago wasn't saying that the Primeline was "bad." He was just asking why, if people want good Trek, they can't just hope for for good Trek in the NewLine? If all you want is good Trek, why obsess over the old continuity at this point? Unless you actually care more "restoring the prime timeline" than, say, the actual quality of productions?
In that case, the debate isn't about quality at all. Just nostalgia and "canon."