AutoUpdate and Rosetta2

Split from this thread.

There's a new version of AutoUpdate today.

Download a copy of the current version of AutoUpdate from this link, install and then run AutoUpdate to bring your installation to current update level, then restart your Mac. If the updater does not open automatically after download, double-click the downloaded .pkg file. Click this link to download the updater. The update is free.

https://go.microsoft.com/fwlink/p/?linkid=830196

I'm stuck on 4.30 of autoupdater - fails as no rosetta, I just pulled down the latest version from that link, and it too requires it. The original version installed with the suite doesn't require it, and I'm hoping to not need rosetta either and keep my mac clean. Someone flip a build setting after the original version was linked, or is there a check in the code or pkg installer setting that needs to be fixed?

[Microsoft Update Assistant] <Error> InstallUpdatesTask.RetryResponse: {"UpdateID":"9758D807-A88E-42A8-9EF3-F001410CBDBE","IOC":"NO","Error":"installer: This package requires Rosetta 2 to be installed.\n                Please install Rosetta 2 and then try again.\n                    sudo softwareupdate --install-rosetta\n\ninstaller: Error - Microsoft AutoUpdate can’t be installed on this computer.\n\n","UpdateName":"AutoUpdate 4.31.0 (21011103)","AppID":"MSau04","BundleVersion":"4.30.20121301","UpdatePkg":"Microsoft_AutoUpdate_4.31.21011103_Updater.pkg","Success":"NO"}

Newer one is interactive and pops up a failure dialog along the same lines.