Mr Finch
We are not talking about an Ios Update wich has ben out for dozens of years.
If IOS 15.3.1 would make the user vulnerable to Hacking, Apple would force them to Upgrade.
I also saw that you are suggesting many ppl to delete VPN. If they were using a VPN perfectly fine bevor updating, why should they delete/ deactivate their VPN after the Update?
If you Buy a car with a GPS build inside and it suddenly stops wokring, dose the manufacture suggest to use ur Phone insted ?
Its sure e temporary solution but not an error on the User side.
best regards