I think that that my mom would at least try to understand if I send her something like this. With my dad it's more complicated. His reaction would probably be negative at first but he may come around it later, that's why I'm not coming out to him yet.
Problems I had were because of software not being on the latest version, not updates. Things just work on Arch for me. Only thing that ever broke was Xorg because of Nvidia drivers but that's pretty easy fix.
I'm doing it in bathroom because it's the only room in our house with a locker but it wouldn't change much because closet is in a hallway so there is still a posibility of someone seeing me while returning clothes.
I think that that my mom would at least try to understand if I send her something like this. With my dad it's more complicated. His reaction would probably be negative at first but he may come around it later, that's why I'm not coming out to him yet.