That's just an excuse and a poor one at that. Many languages (C, Fortran, C++) have multiple implementations and don't get to fix design flaws in the standard l

That's just an excuse and a poor one at that. Many languages (C, Fortran, C++) have multiple implementations and don't get to fix design flaws in the standard library; JavaScript is not unique in these requirements. The only special thing about JavaScript is that after 25+ years the standard library is still grossly inadequate.