I work in the film industry and can say, with certainty, that TNG was not shot with the same consideration.

Television back then knew it was being mastered for TV and the artists working on that had a good idea of what it meant they could get away with compared to something that would be screened in 35mm.

Audiences have also gotten less forgiving of visual quality and less willing to suspend disbelief at the bar for quality has steadily risen. It means that shows are both working on higher definition target mediums and under more scrutiny than ever.