Importantly, it is not the only one. From a very long lasting push for Gnome to dominate, the ZorinGroup has pushed for Flatpak and in 17, even applied some force to the issue in spite of Mozilla listening to user feedback and setting up a .deb for Firefox that is fully supported.
LibAdwaita and Wayland also are now being pushed.
This in light of the ZorinGroup remaining silent with constant complaints of a lack of communication with their delays.
I have marked my departure from Zorin OS as well.