Most OSs don’t let you change a WiFi’s MAC address these days. Sometimes even the hardware doesn’t support it.
Really? I think you can change your MAC in Windows 10, macOS and Linux. What OSs do you have in mind?
I believe iOS rotates it periodically.
Love it. Could be fun to toss up a WEP ‘secured’ SSID in an untrusted DMZ VLAN that has doesn’t have filtering. Figuring out how to use the aircrack suite on an ancient thinkpad to bust an SSID was what really got me interested in computers as a kid.