Sorry, but you're wrong!
There was a kernel, it was called nuKernel. The boot ROM was used to launch the machine and provide the hardware information. You could replace the Finder with any other app and make the computer boot and work, but the System file was necessary for anything to function.
For the WaitNextEvent thing, what you describe is cooperative multitasking in an OS without memory protection.
Oh.. and DOS was an OS too...
Anyways, the e-mail telling thing will break as been sent many times..
Anti-Virus updates are considered priorities here.
It is tested on a server, if it works good we update production. It takes less than 15min of my time..
-Follow the mailing list where there as been numerous e-mails telling that the support would end
-Use a repository that updates your server easily
Wining was not an option here...
You will be successful in your work.