Hi all.
I was told by the people on the suckless dev list that the people here might be interested in the following projects:
Gtk2 without atk and accessibility:
https://github.com/stefan11111/gtk2
And a stripped down atk for gtk3:
https://github.com/stefan11111/atk
Along with the patches needed for this:
https://gitlab.gnome.org/GNOME/gtk/-/issues/5964