Re: blaming slack admins for this one
Given that WSUS is free, easy to set up and takes up very little space / resources then I kind of have no sympathy for admins who aren't running it.
Bullshit! It requires a 20+GB disk, RAM and CPU dedicated to run a Windows 2008 server on, the license for which is NOT free.
If it were a tarball that I could download, roll into a .deb package and install on the Linux server here, then I'd agree with you, however, it isn't, which means we'd need to procure hardware and software for a server dedicated to the task of providing this service.