Emacs is not about being lightweight or faster to type with, this seems to be a misconception that stems from it being compared with Vim. Emacs is not a modal editor, it works just like your standard text editor as far as typing and navigation go.
As for the other things, Emacs has support for many more languages than VSCode or Intellij. An example of this, is support for (g)awk, or non-posix shell scripts, lots of lisps, jq, various config file formats, and other things that aren't "hot" right now.
There are other reasons too, like Emacs being a true FOSS project, which is important to me. There are lots of other things, these are just a few ottomh.
As for the other things, Emacs has support for many more languages than VSCode or Intellij. An example of this, is support for (g)awk, or non-posix shell scripts, lots of lisps, jq, various config file formats, and other things that aren't "hot" right now.
There are other reasons too, like Emacs being a true FOSS project, which is important to me. There are lots of other things, these are just a few ottomh.