[iClaudiusX]

The motivation is the same for re-branding 4G-LTE as 5G (or 6G). Sell the same thing with a new name so customers are tricked into thinking you're selling something newer and better based on the spec sheet without context.

[Wowfunhappy]

The 5G thing is the carriers's doing, not the standards body.

[SlowRobotAhead]

It’s like they created Long Term Evolution (no more ‘G’enerations) then immediately realized the marketing issue.