Nice try to push it to Apple.
Why did this not occur to Avast during product testing? Don't you test for production environment, where VPN connections more often then not are a must, with CISCO being a world standard for this, particularly under work-at-home Corona?
Did Corona work at home and Big Sur catch you guys completely by surprise?
Then, how come, that Avast has this problem and other AV have not (case at point: Intego)? What is "reporting to Apple" other than trying to shirk responsibility?
My work has been seriously affected by Avast product failure. I wasted so much time on this issue, that I blamed on anything but Avast, including the wifi router.
I am being paid by the hour, you know? And jobs are very hard to come by these days. Not using antivirus and VPN breaks the agreements at the base of my work.
If Avast had done proper product testing, then the issue would have occured to you. Then the very least you can do is sending out a warning to your customers "please don't upgrade OSX, particularly not if in a production environment, we are not ready yet."
But since the issue did not occur to you because you are overly confident in your product and did not feel the need to properly test it in the first place, you of course did not see the need of warning your customers.
I think there is potential for some lay-offs at Avast.
I expect Avast to improve its act dramatically.