Github.com refuses to use jQuery and goes to pure JavaScript

Today Mislav Marohnić announced that , that the developers of Github got rid of jQuery on the frontend of GitHub.com. It would seem, in this very fact there is nothing remarkable, if not for one interesting moment.
 
 
The problem of choosing a new front-end framework was solved radically - it was decided to do without frameworks in principle. Instead, the following tools were used:
 
 
 
querySelectorAll (which was supposedly inspired by jQuery at one time),
 
fetch to work with AJAX,
 
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