I am all for experimentation and choice. Gnome wants to remove that choice.
If you preferred GNOME 2, you might want to check out MATE. As far as I know, the GNOME Project has done nothing to hinder their efforts.
This, plus proliferation of antialased rendering offsets advancements in CPU power - to the point that navigating source code in QtCreator on my Linux box is not that smooth as I'd like it to be.
That almost certainly has more to do with either display sync issues (which sadly aren't uncommon on a composited X desktop especially with non-free drivers) or the various services of the IDE. Anti-aliased font and line drawing aren't that demanding to begin with, and can be GPU-accelerated with pretty much any hardware you might have picked up within the last five years or so.