Here are a few reasons someone would want that. You might not value them the same, but that does not make them wrong.

1) They have issues with the ways these models were trained. They may consider it unethical to use models trained on what they consider plagiarized material or on material that used a lot of energy for training.

2) They may have higher value uses of the storage space and compute resource.

3) They may view installation of apps and features without consent to be an infringement on running their device the way they would like.

4) They may find the general technology and its impact on society to be concerning, anxiety inducing, frustrating, or irritating. And simply not want to participate.

5) They think it sucks. Like, out just doesn't work or doesn't help them.