That isn't totally true, even on Linux we have had https://jmvdveer.home.xs4all.nl/en.algol-68-genie.html for years.

Also, most languages trace back to ALGOL 60 (the C family tree goes ALGOL 60 -> BCPL -> CPL -> B -> new B -> C -> ANSI C -> ..., though there was some influence such as the idea of "casting", but apparently C only has a castrated version of what ALGOL 68 had) and Pascal is if anything negativly influenced by ALGOL 68 due to Wirth's disagreements with van Wijngaarden: https://dcreager.net/people/wirth/1968-closing-word/.