One could understand, why they need to market the hype ( or bait ) to switch to 5G. On the other hand, most of the marketing point, like self driving vehicles, remote surgery operation, mmWave for everyone, or so called up to 20Gbps are by most's [1] people's standard "lying". They could have used other marketing points , but somehow marketing for tech has become something else.

If you talk to most if not all engineers working on 5G, whether that is the 3GPP spec, or actual network implementation in both software and hardware. They would all tell you the truth, 5G is simply a better 4G. And to be honest, as an Engineers, Tech Enthusiast, and also a consumer. That is good enough for what it is.

[1] May be not America because it seems you could get away with Tesla type of marketing and hype without immediate penalties.