You can sideload apps for free on the Quest and Apple requires a dev account for $99 a year to sideload anything more than a trivial app or two. The Quest definitely feels objectively less locked down than iOS IMHO.
Yep, plus Zuck himself has publicly criticized Apple and said they aren't gonna go down that route. Look at all of the mainstream consoles, PS5, Nintendo Switch, etc: none of them allow you to sideload anything. And Meta even went a step further than that with the semi-unlocked bootloader. That is unprecedented, most Android phones don't even have that.
People tend to conflate FAANGs with each other. One bad Apple ruins the bunch.