Yes it certainly is a serious suggestion. Acetone will not remove the crystal just the glue that holds the cyclops to it (as long as its a sapphire crystal). As by-tor said the no date reps are crap.
That being said I believe the best suggestion for the original poster would be to remove the cyclops.
Modding gen rolexs is never recommended but is more common then you think. That being said while it may be rare, it is entirely plausible for a submariner to not have a cyclops if the owner did not want one.
Its up to the author of the thread, but that's what I would do. Take it or leave it.