Could you explain why it is not “clean code“? :)

True,although it will only ever run over an array of 10.

totally agree. maybe clever but confusing as hell. readable code over clever code. always.

Maybe i will create my own platform like this here then, just with much less bugs and proper core-features.

Good luck

B1ts is just a user, not a maintainer/developer (So am I).
You unfortunately have to link to your Github account. See https://github.com/codewars/codewars.com/issues/1398

The only way to change your profile picture is to link your account with Github.

You can't.

I wouldn't agree with their opinion. To me dealing with pure functions that return values is easier. The advantages of using custom for loops over forEach however is that you can use arbitrary control structures (return, break, continue, yield, await) in the loop body.