Not so, as my Intel AX210 WiFi/BT card using the Sonoma Alpha v2.3.0 release of Airportitlwm.kext works with Messages, the same as it does on my other hacks using a Broadcom WiFi/BT card. Bluetooth works just fine too.
I'm going to replace the MediaTek WiFi/BT card that is currently in the M.2 slot on my Asus B550 motherboard with an Intel AX210/200 or similar compatible card and see what difference it makes compared to the Broadcom WiFi/BT card I am currently using in Ventura. I might even upgrade to Sonoma on a spare drive, to check that out too.
Now I just need to fined the Intel WiFi/BT card among the many boxes of parts I own.
I'm going to replace the MediaTek WiFi/BT card that is currently in the M.2 slot on my Asus B550 motherboard with an Intel AX210/200 or similar compatible card and see what difference it makes compared to the Broadcom WiFi/BT card I am currently using in Ventura. I might even upgrade to Sonoma on a spare drive, to check that out too.
Now I just need to fined the Intel WiFi/BT card among the many boxes of parts I own.