I'd argue it is, and it should be so even in the US.

Even if Netflix's intentions had been perfectly benign - and even if they didn't specifically target this category but only did so emergently through some unsupervised algorithm - they now have a way to find out for all of their customers whether they are closetted gay.

Imagine someone like Trump or Desantis or even worse coming to power. People like those will certainly find such databases helpful, and they won't care at all whether the data is ostensibly about viewing preferences or directly about sexual orientation.