Try to make Orca start when mate desktop is launched.

.includes/gui.sh

@@ -71,5 +71,12 @@ if [[ ! -d ~/.config/speech-dispatcher ]]; then
     spd-conf -n
 fi
 
+# Automatically start orca for mate.
+if [[ "$1" == "mate" ]]; then
+GSETTINGS_BACKEND=dconf gsettings set org.gnome.desktop.a11y.applications screen-reader-enabled true
+GSETTINGS_BACKEND=dconf gsettings set org.mate.interface accessibility true
+GSETTINGS_BACKEND=dconf gsettings set org.mate.applications-at-visual startup true
+fi
+
 # enable nodm
 sudo systemctl enable nodm --now