Chrome on Android seems to have a reader mode. They don't call it that, it's called "simplified page" or something like that, but it's basically the same thing

Chrome on Android seems to have a reader mode. They don't call it that, it's called "simplified page" or something like that, but it's basically the same thing as FF and safari's reader mode. And they even prompt to use it, which isn't something I've seen Firefox do.