Nobody should use TIOBE for anything ever. Except maybe for making jokes.
As one example, it ranks Typescript lower than languages like VBScript and FoxPro which have been dead for many years. The worst kind of garbage information is the kind that pretends to be scientific ("look, we have an index with a formula"). Nobody with a brain can look at this and claim that it's useful for anything, it's indefensible.
[1] https://github.blog/2023-11-08-the-state-of-open-source-and-...
[2] https://www.tiobe.com/tiobe-index/