While 5G has certainly been hitting the peak of the hype cycle, as I understand it another genuine difference may well be a lack of reliability under emergency circumstances.
Since it uses a higher bandwidth, 5G required many more transceivers to be installed in a given area. That's fine, but with a huge increase (as I understand the requirement) odds are that they will not each have backup battery power to be used in case of emergencies. Today people are familiar with the concept that, in a blackout, say, their cellphones will still operate - and this of course is because the network operators have backup batteries installed on the relatively few towers used in 4G systems.
I gues it remains to be seen if they will do the same for the ar more 5G devices required; if not, folks may be in for a rude awakening when a problem arises.