Comment by byroot

> They aren't interned frozen strings

Doesn't matter. The parent claim was:

> You'd just have a broken VM if you used mutable strings for metaprogramming in Ruby

From day one it was possible to freeze strings used in metaprograming. I mean Ruby Hashes do that to strings keys.

> Ruby 3.4 making it unnecessary because it is on by default.

That's incorrect: https://byroot.github.io/ruby/performance/2025/10/28/string-...