Yes the original film exists, but you can also see the edges of the prostheses, the wear on the sets, and the ripples in the seams of costumes (as regrettably you can see in most seasons of Picard). People watch remasterd TNG anyway, but the rough edges show.
Red and Panavision capture everything all the time now.
Yes, people have worked to that production norm in cinema for nearly a century now, but very few cinematic features are filmed in a week.
Hey, I get that you’re angry, and I totally agree that not enough of the return is going to the creators and crews, but those same folks involved in production are talking about an unrealistic norm of gruelling long hours in production. They need both decent pay and residuals and humane production schedules.