“Glowie” or “glow in the dark” is a non-political meme term used in 4chan and other chans for digital spying agencies (three letter and the like). Same goes for terms like “botnet”. Sort of treating them like radiation that must be kept away. Maybe the term got its birth from radium in clocks that allows to see things in dark.

It was a reference to how Apple is a part of NSA and PRISM program. So to shorten all this, “glowie” term is used.

USA megacorps create discrimination against privacy in general via many ways we know, and Apple does against any non-Apple (99% Android) users by changing contrast of coloured bubbles for chat messages. USA people are lazy to change from “Messages” iMessage app, so they live in their own bubble.