Your choices for an M1 Mac (presuming you specifically need Office and not a workalike product) are Office 365 or Office 2019.
Apple can't do that for them, and vendors get plenty of advance documentation of what they need to do. It's up to third party vendors to keep their products up-to-date so they work in the latest OS. The Mac and its OS are their products, they can do whatever they want with them. With only a few, very rare exceptions, you can't install an OS that's older than what your Mac shipped with.Īpple didn't wreck anything. Apple's products have always been this way. This is also true of the most current Intel based Macs. You cannot install any OS older than Big Sur on any M1 Mac.
