Honestly true. At the very most you have to make certain switches to some software. For elderly people these switches are pretty minor since often they aren’t needing something like industry software for their work and at most will need to switch to like… LibreOffice, OnlyOffice or something of the sort. Not hard. For people in a job that may need design software like any Adobe product, there are Plenty of alternatives that work pretty well. Main thing is just spending a few days to get used to it and learning the differences. Only big thing I’d say that would be very hard to switch to Linux is if you make Music. Because if you use FL Studio, the closest alternative is LMMS… and it sorta sucks and at times is very uncomfortable to work with. You’d probably have to switch to Ardour or Reaper which would be a pretty massive change… Overall though, those account for a small number of people.