I would not blame it on Microsoft, but on Apple, because the driver support for the Creators update is bad - it's not like Microsoft has to cater to Apple devices exclusively... As long as there are supported drivers, then Windows will work correctly, right?
While troubleshooting this issue I found that drivers re-applied / forced to load / etc around 32%, and that's where the installation fails. Error 0xC1900101 - 0x30018 is related to driver errors on installation (https://answers.microsoft.com/en-us/windows/forum/windows_10-windows_install/err or-when-upgrading-to-windows-10-0xc19001…)
I also agree that the drivers to be used vary from model to model, it requires a lot of tinkering and knowledge of your mac to be installing them manually... but then again, I am running windows in UEFI mode, and not Boot Camp haha...
Also, tried to keep technicalities at a minimum (not trying to explain driver merging and etc.)
Lastly, yes, a lot of people won't know how to proceed on this as this is very technical, but it's no excuse. I think ultimately Apple needs to provide better support for their drivers (e.g. Fan control is "lacking" for a better word, two-finger right click on trackpad only works after login, inconsistent audio/microphone switch from optical/headphones to regular speakers and vice versa, terrible keyboard layout implementation, etc... I could really keep going...) if they are going to promote Boot Camp as a worthwhile feature.
Really hoping this can help anyone with the Creators Update!