Fortunately most people know not to take it too seriously or don't care either way. People typically only buy a phone when their last one dies so the sales pitch is usually between two very similar models in a store/website, with a possible up-sale for 5G (until 5G is standard). A small price bump because someone believed the sales guy's technobabble is not that big of a deal really, which is probably why there's no lawsuits unlike drug mislabeling.
Which is different than people buying a whole new phone just because they heard about 5G, which is a small minority of early-adopters who are always getting burned by tech churn.
Half or more product differentiations they think up for cell phones is mostly useless or quickly adopted everywhere. 95-99% of the UX will be the same thanks to the Android or iOS and highly competitive hardware specs.
Reminds me of all the garbage that went around in the transition from AMPS to digital. I had a co-worker tell me her phone was better than mine because mine was only Edge, but hers was PCS!
The AT&T guy should have put an "e" in front of it to tap the nostalgia for 90's marketing nonsense.
eMachines, eBike, etailor, etc...
People will love 5G because it's one more G than 4G. And then AT&T can call it's version 6Ge.