I am a libre software developer and technology archaeologist. I do not fear of legacy software.
Living the life of legacy is the key against planned obsolescence.
Currently on a 2 week strike off Stack Exchange network (starting 16-Oct-2019 GMT+7), due to an unilateral change in Terms of Service and Code of Conduct.
Note: For folks who publicly identify themselves in non-conventional ways on Stack Exchange, due to a recent change on Stack Exchange's Code of Conduct which mandates coerced speech, I'm obligated to skip answering your questions entirely; apologies in advance.