I've never liked the "my" prefix for labels because it wasn't immediately obvious whether "my" referred to me, or to the person/company/entity/software which created the thing.
This is particularly annoying when error messages are written from the point of view of an entity or fictitious person, e.g. "Sorry, I wasn't able to..." but things on screen are labeled "My..." Is "me" the user or the software?
Back in the Windows 9x days, Windows didn't refer to itself with first-person pronouns. That was a development that occurred a few years after "My Computer" morphed into "This PC".
This is particularly annoying when error messages are written from the point of view of an entity or fictitious person, e.g. "Sorry, I wasn't able to..." but things on screen are labeled "My..." Is "me" the user or the software?