I made the same type of arguments about fat arrows but everyone told me to stop whining and I'd get used to it. Years later fat arrows still feel like a bad syntax choice.
From a language design perspective, fat arrows make parsing unnecessarily complicated because you cannot distinguish "(a, b, c)" from "(a, b, c) => ..." without looking ahead or backtracking. Certainly not difficult to solve, but this choice makes extending arrow syntax more difficult and the fact that a production called `CoverParenthesizedExpressionAndArrowParameterList` exists in the language grammar is a pretty ugly IMO