"My experience getting older relatives to use Mint has not gone well. The most common is their reliance on Microsoft Office"
I was asked by an older friend to put Linx on their computer because they were too frusterated with MS Windows. She also used MS Word and Powerpoint a lot. I said that I had installed a different version of Offce because it was all I had at the time, so the menus would be slightly different. It was three years before she discovering that LibreOffice was not Microsoft Office. By that time it didn't matter.