I just did a quick GitHub search, strcat seems to have been used about 5 million times across all repositories, as compared to (e.g.) memcpy at about 80 million. Clearly somebody is using it. I would hate to try to get a measure of how often it&#x27;s used in other languages; it&#x27;s not the sort of thing anyone would think twice about. I believe you have made an inductive error based on your own sample and that the original premise is entirely correct.