Might not be a secret but it's not like Apple inform you on it.
Looking at the product page you need to click on "How much is storage is right for you" to find a vague : "MacBook Air storage is not user accessible".
What does accessible even mean ? Far from clear that even Apple won't upgrade/change it.
And as for the boot issue it was not present on older modele and quite a lot of people only learned of it with the recent Rossman video.
casual classism on HN. You're suggesting not only that everyone do the research, but be capable of doing the research, understanding the research, understanding whether they're being lied to, all without potentially any knowledge of how things work.
What does accessible even mean ? Far from clear that even Apple won't upgrade/change it.
And as for the boot issue it was not present on older modele and quite a lot of people only learned of it with the recent Rossman video.