I think so, but it's spread among different menus and flags. Plus if even if you disable it, it's still there, one of the origin options sounds like it has it fully removed from the code.

It's true, if you don't want to spend 5 minutes customizing your browser to your needs you can use GitHub script that disables all of the features for you. But I don't see how feature like reader isn't handy, it often lets you bypass paywalls for free.