bug#41532: Why use the mouse in Emacs?

[Drew Adams]

> The user experience is quite different when browsing the Emacs and
> LibreOffice menus although they seem similar. The Emacs interface is
> mainly text-based partly because there are few graphical widgets.
> 
> Nonetheless, this difference is not always clearly perceived. It can be
> seen in the following two cases:
> 
> 1. Menu bar> Tools, Merge, Files... opens a window manager window.
> 2. Menu bar> Tools, Search Files(Grep)... opens the minibuffer.

#1 invites you to submit a `grep' command.
#2 invites you to choose files.

 `C-h v use-dialog-box'
 `C-h v use-file-dialog'

(Emacs users have a choice, for #2.)

`...' at the end of a menu item means that _some_
further user interaction will entail - for example,
you might be prompted for some input (minibuffer),
or to hit a key (`read-char'), or you may be invited
to do any number of other things.

I'm not sure what you're saying - what the problem is.
But it seems that you're sure.  Examples (like the one
you showed here) can likely help get your point across.
But maybe it's clear to others, even if not to me.

You speak in generalities, which doesn't help (me):
"the Emacs graphical interface is half broken."
"it is difficult to navigate with the mouse or to
organize its work".

HTH.