Presumably the policy that iOS apps can only be built on Macs. It is actually against ToS, it is not just that Apple doesn't provide devtools on other operating systems.
How is it “Apple’s policy”? Apple chooses not to write a tool chain for Windows or Linux. If a third party once to make one, they are free to do so.
The post I was responding to said “it was against Apple’s TOS”, probably referring to a policy that was rescinded back in 2011.
There is a big difference between Apple not allowing something and Apple not supporting something. I choose to write native apps for the platforms I care about. If I wanted to use Xamarin I could.
To make a build of a xaramin app for publishing to the iOS store dont you need a Mac at least for one stage? It looks like you do under the "Archive for Publishing" section here:
You can develop on Windows.
https://docs.microsoft.com/en-us/xamarin/ios/get-started/ins...
And use Microsoft’s hosted build environment for up to 40 hours a month for free.
https://docs.microsoft.com/en-us/vsts/pipelines/agents/hoste...
The whole kerfuffle you are referring to is about 7 years out of date.