Why not add something together with the date telling people for how long this information will be valid? Does not have to be a date, can be "indefinitely" or, i

Why not add something together with the date telling people for how long this information will be valid? Does not have to be a date, can be "indefinitely" or, in the case of software "until new major version update". Works best when you also revisit old content occasionally and update that information. I think you drew the wrong conclusions from those inquiries.