I know what u are trying to say. But the thing is, I love:
i) Firefox instead of Chrome for privacy issues
ii) YouTube Vanced instead of YouTube because of Ads.
iii) I don't need Pixel Stand preinstalled because Oneplus 5 doesn't support wireless.
Similarly, there are many apps that are preinstalled, which I have no use. There are better alternatives.
And so on. You are right, why to choose this ROM when there are other ROM which is not overly pixified. Because of:
1. Native GCAM support. This is very important.
In Oneplus forums, one of the most anticipated feature requests was, "Give the user the right which app want to keep when he/she set up the phone for the first time (i.e first boot)."
And I loved that idea. If companies like Samsung, Mi, etc implement this, it would have been amazing.