That's the point - the statement you quoted is very uninformative, and a strong example of bad, unclear communication. It literally does not say anything about what it is what it does, what capabilities it offers.
That statement is essentially "It's a multitool for this target audience of users. It's really good for everything they want to do." - without giving any information about what that "everything" is. It does not provide an example use case - "hacking digital stuff such as radio protocols, access control systems, hardware" is not an use case but just an application domain, but an example use case would be some hint of how this tool would be actually applied to help someone do a security analysis of some radio protocol for an access control system.
Why not say something roughly like
"Flipper Zero is a portable multi-tool that includes transceivers for arbitrary interactions with most popular wireless systems - RFID, NFC, BluetoothLE, infrared and sub-1 Ghz wireless devices. It allows you to run custom exploit or analysis code for these protocols interactively from a convenient small hardware device." ?
That would actually tell a potential radio hardware hacker about its capabilities and limitations; e.g. the original description could just as well be said about the hackRF SDR system, which is substantially different piece of hardware but aimed at a similar audience.