How would that be any different than verbally telling someone the password? They could then verbally tell someone else...
Unless you're thinking of a different scenario where people are now being granted access under the new system, where they wouldn't have been given the password under the old...
Sure, that's always been possible, but it's a bit harder than this. Rather than verbally providing the password, you can type in the password yourself, which complicates spreading further by requiring them to have both iCloud password sync (whatever that's called) enabled
and access to a Mac to view it in Keychain. Not as easy as just holding two phones in proximity to each other.
LOL, really, You can pay for Cisco ISE then. the rest of us with real budget constraints will use Hidden SSID's and complex Passwords. Guess you never heard of Intermec Scanners and Other Items like that.
Sorry, but a hidden SSID or complex password still won't help you out with the situations other people were complaining to me about above.

It might help with this feature though, since it's not clear that it could work for SSIDs that are not visible--but in general it's not doing you much more good. As for RADIUS, you don't need anything too fancy for that. In a corporate environment, you're probably already using some sort of central authentication mechanism like AD. Both Windows and macOS servers can act as RADIUS servers, and there are other (including at least one FOSS) option as well.
What do Intermec scanners have to do with this? Do they require PSK wifi? If so, you can create a separate SSID (enterprise APs should support this) and, sure, use PSK for that, maybe with MAC address filtering or something to at least try to mitigate potential problems.