"delay the rollout of 4G by 18-24 months"
Fine by me, longer would be better.
I don't need 4G's much-needed higher speeds, and nor do most people. Therefore I have no wish to pay for it (unless it saves me money).
I do need better coverage - I've just forked out on a dual-SIM phone because I'm spending time in two different places which don't have a working network in common.