It does seem like a weak argument when it can be enforced/fixed by linters e.g. this is already solved in JS with eslint prefer-const rule I suppose you can em

It does seem like a weak argument when it can be enforced/fixed by linters e.g. this is already solved in JS with eslint prefer-const rule I suppose you can emulate it today with variable prefixes/suffixes and check the AST with a custom linter yourself