Lack of clarity on my part - apologies.
Firstly, things I definitely CAN do on my iPhone (SE 2020). When I hold my iPhone next to an NFC tag holding email recipient, subject and message information, up pops the option to send an email with these details already completed; I do then have to click the send button. Similarly the phone can pick up the recipient details and message for SMS from an NFC tag and give me the option to send the message; I do then have to click the send button. Similarly the phone can pick up a url held on an NFS tag and give me the option to open Safari using that url. The same options are presented for all of these things if the relevant information is held in a QR code and I point the camera at the code.
But, and this was my query, if I point my phone's camera at a QR code holding a wifi network's SSID, passphrase, and encryption details, I'm presented with the option to connect to that wifi network - I've been using that facility for months - but if I hold my phone next to an NFC tag holding these same network details that option to connect doesn't pop up. I'm just wondering why hasn't this facility been implemented in ios 14?