Support team disinterested in wifi diagnostic reports

Most Apple support personnel do not understand more than the very basic Mac functionality. Even a lot of techs may not really understand more than the basics and may not understand the information contained in the reports. I know I created one of those reports once, but gave up looking at it as it was difficult to read. In fact I'm not sure it is even in a readable form by default.

Try creating a new network location or even a new macOS user account and test the WiFi from the new user account. If you are running any anti-virus software, cleaning apps, or third party security software, then those apps may be interfering with the normal operation of macOS.

I haven't repaired an M1 MBAir yet, but most recent Apple USB-C laptops have the WiFi integrated into the Logic Board, so unless you have a poor antenna connection, it means your Logic Board needs most likely needs to be replaced assuming you don't have a software issue that is causing the problem. You can try booting into Safe Mode to see if things improve and you can try reinstalling macOS over top of itself, but a clean install of macOS is best to determine if it is a hardware issue. If you don't want to deal with restoring your data, then install macOS to an external drive and boot from the external drive to test the laptop. Just make sure to test a clean install before installing any third party apps and before migrating/restoring from a backup.

You should also reboot your laptop if you have not already done so. Also power cycle your router. Don't overlook the simple things when troubleshooting.

TPnSF wrote:

Question: prior to reinstalling the OS I would received text messages from non-Apple devices (Android users, security codes from my bank, etc.). Since reinstalling however, I only get texts (on my Mac) from Apple devices. My phone continues to receive all. I have looked everywhere for what setting this might be, but have unsuccessful. Any ideas?

On your iPhone, go to Settings --> Messages. There is an option for "Text Message Forwarding" which will allow your other Apple devices to receive standard text messages from non-Apple devices/users.