Earlier quoted context omitted.
I find the title to be pretty accurate and I am by no means a native speaker
"Opt" means to "To choose; select" [0]. If you opt in (i.e. make the choice to go in), that implies that you were not already in. In other words, it implies that the default (when you don't make a choice) is "out", i.e. disabled. "Opt-in" and "opt-out" describe what the default is, so adding "by default" doesn't make any sense. If you can choose to go in ("opt-in"), then the default is "out". If you can choose to go…
There are topics dear to every subgroups heart, that the members will claim, surely must be exempt from this. As far as I can tell, the exemptions are mostly arbitrary.