Blackberries were not gimmicks just like Horse & Buggy were not gimmicks.
I think you need to consult the dictionary on what a 'gimmick' is.
By your analysis, the original rotary-dial home phone was a gimmick, because it's not around anymore.
Possibly before asking me to consult a dictionary you should do so. Result 1 from dictionary dot com
1. An ingenious or novel device, scheme, or stratagem, especially one designed to attract attention or increase appeal.
Any feature added to make something easier, prettier, more user friendly would be gimmicky compared to the original invention. Yes a rotary dial is gimmicky compared to the original tap to dial systems first invented. Same as a fingerprint reader, a slimmer design, a touch screen are all gimmicks compared to the basic "Telephone"
Blackberry's claim to fame was email and the click keypad. Who remembers them now. Who needs physical keypads when you can have virtual onscreen keypads.
Sure a horse is not a gimmick but the buggy is. Also youre trying to take what I am saying and put it into an incorrect context of "old is gimmicky" which is not what i said at all.