Question [Q] Missing option "protect USB storage"?

I never used the option, "protect USB storage", but recently a favorite app stopped working after going from 4.3 to 4.4.2 on my N7 2013, after the developer got back with me, he stated that it was because I enabled "protect USB storage" (which I did not) and that he fixed it by adding READ_EXTERNAL_STORAGE permission to his latest build.

Out of curiosity, I went into developer options and discovered that there was no longer a "protect USB storage" option there, am I looking in the wrong place? Or was it ever there? Or did Google enable it then take out the option?

Thanks in advance.