I smell some FUD here.
This is NOTHING new. When I used to run Cisco VPN on my Mac as well as other security software, it frequently had issues post-upgrade to the latest and (sometimes) greatest new MacOS versions.
What's annoying here, is the narrative that this is wholly Apple's fault. The latest MacOS (Sequia) has been in Beta since early June. Plenty of time for the vendors to get their acts together.
That's one of the reasons that Beta software exists. Poor experience for end-users when the security company all-of-a-sudden get confronted with a brand-new MacOS edition and claim that this is somehow surprising to them.
Rant over....