Whether it's what's "right" or not (and believe me, I know that it is), it's not necessarily worth getting worked up about, and it's certainly not worth taking as some sort of insult, or slap in the face.
Given how prevalent the use of "clips" is in modern society -- I've heard it used not only at my local firing range, not only on a firing range where I was punching paper with some local SWAT guys, not only in the Army, but on some of the recent info-tainment gun/weapon shows like Deadliest Warrior and Future Weapons and stuff -- it's perfectly possible that by the time the Shadowrun universe rolls around, clip is the correct term.
Forty, fifty, sixty years from now, it could totally happen. Just tell yourself that a clip is a magazine in the SR-verse, and go about enjoying the game. No need to get excited.