It's not out of context at all. It's bizarre to assume that every book ever written about a subject will be updated constantly by it's (currently septagenarian)

It's not out of context at all. It's bizarre to assume that every book ever written about a subject will be updated constantly by it's (currently septagenarian) authors in perpetuity and/or that a failure to update it is an indication of the culture in general and not the authors having literally anything else to do. It's not like books on C stopped being written by 1990.