Should `x == 1 or y == 3` be a syntax error? Because that’s operator precedence too.
in c, x == 1 || y == 3 works fine, but unfortunately the bitwise operators have the wrong precedence; x & 2 == 2 is parsed as x & (2 == 2), which is never what you meant. so even the best software designers have made terrible blunders in precedence design
math formulas are a bigger issue; 3*x**2 + x/2 + 1 is a lot better than the fully parenthesized version
However, there are also operations with crystal clear precedence relationships, such as logical conjunction and comparison, and in that case it has to be asked what exactly would the parentheses be there for?
In lisp the answer is: to enable syntactic homogeneity and to enable macros.
But in other languages like Python that don’t have sexpr based syntax, parenthesizing everything would just be pointlessly unreadable.