I disagree here - I’m not sure why people hold this view. The only argument (if you can call it that) I’ve seen on here and elsewhere for not using the prime Enterprise design is that it was featured on a tv show in the 60s. That is, the design is old therefore it’s dated.
No, the argument is that it was made in the 1960's using 1960's techniques on a 1960's budget for 1960's sci-fi expectations. It looks cheap, it looks under detailed (which no amount of textures can fix) and it looks simplistic.
Hence why the movies used a refit as an excuse for not bringing the model back.