I think some organizations see this kind of implementation leakage as a feature, not a bug.
I remember when http://microsoft.com/ began doing external redirects to "default.asp" circa 1997. If you were a "webmaster" (do these exist anymore?), this was a dog whistle. They were not using static .html (or .htm) but not any of the common dynamic methods like .cgi or .shtml either. And using "default" rather than "index" indicated a break from NCSA/Apache convention. They were using a different web server. Those 11 extra characters said a lot.
I remember when http://microsoft.com/ began doing external redirects to "default.asp" circa 1997. If you were a "webmaster" (do these exist anymore?), this was a dog whistle. They were not using static .html (or .htm) but not any of the common dynamic methods like .cgi or .shtml either. And using "default" rather than "index" indicated a break from NCSA/Apache convention. They were using a different web server. Those 11 extra characters said a lot.