Didn't TTFB become popular because back then the start-up/handover time of the request from the server to the URL handler, CGI, FastCGI, etc., was significant d

Didn't TTFB become popular because back then the start-up/handover time of the request from the server to the URL handler, CGI, FastCGI, etc., was significant depending on the handler's language, ... Far less significant now. Cutting TCP packets with compression is much more useful.