If your definition of IDE is that everything has to be done using menus and that it needs to be super slow, you are right. If you look at actual functionality then VSCode is as much of an IDE as Eclipse.
The actual slow part is the source code analysis (that is quite robust). Apart from that, I've never noticed any real slowness. I have an M1 MBA and WebStorm is quite responsive. I've not touched Eclipse since 2015, but I remember it was fast even then.
