It's funny, you say > It doesn’t matter what our opinions are or what we have/haven’t seen. The only thing that matters are what the performance measurements s

It's funny, you say > It doesn’t matter what our opinions are or what we have/haven’t seen. The only thing that matters are what the performance measurements say in numbers. But your only argument here is not numbers, but appeal to authority: > > I'm not a front end dev > But I am. I don't have any particular reason to doubt you, but if objective numbers should rule the day here, maybe you could link to an article comparing the performance of a simple application using CSS selectors and then switching to using the DOM API?