Few developers complained about JavaScript until Back-end developers became 'Fullstack' and had to start working with it and tried to apply the same mental model they had used with Java or Python etc.
CSS was always something you had to dedicate time to, to master and learn the quirks of the current and past browsers, until Back-end developers decided it was 'terrible' and a race to the bottom of CSS frameworks was created and nobody remembered proper selection or specicifity as BEM was adopted.
HTML was a tool for layout which developers made good choices for thoughtful semantic code, so that it was easily readable, for both man and machine, yet it was a manual process. Then Back-end developers didn't have the time to learn something new and everything is a div and if you're lucky it will have a role.