1: In a/b testing, nearly everyone including pixel peepers prefer a more vibrant photo.
2: the traditional perspective of "a photo should look as close as possible to what my eyes see if I drop the viewfinder" is increasingly uncommon and not pursued in the digital age by nearly anyone.
3: phone companies know the above, and basically all of them engage in varrying degrees of "crank vibrance until people start to look like clowns, apply a skin correction so you can keep the rest mega vibrant" with an extra dash of "if culturally accepted to the primary audience, add additional face filtering to improve how people look, including air-brushing and thinning of the face"
This is rightfully compared to the loudness wars and I think that's accurate. It really became a race to the bottom once we collectively decided that "accurate" photos were not interesting and we want "best" photos.