Re: "Why did Van Wijngaarden still call it Algol and not Mindfsck"
Wirth didn't like coding in assembler, so he designed and created PL/360 in order to create the Algol-W compiler using primitive structured techniques. The PL/360 compiler itself was written in PL/360, so a mini-version of it was written to bootstrap up to the full PL/360 compiler. Algol-W was a great language for computer science instruction, but I/O wasn't its long suit, so it failed to get traction out in the real world. The same can be said for its successor, Pascal, also by Wirth. Because Algol-W was dependent on the PL/360 compiler (and hence the IBM mainframe), its use fizzled as superior alternatives that were platform agnostic were developed.
The compiler(s) in original form are still available on the MTS tapes for running under Hercules if you are so inclined.