It seems so. Seen some discussions on Arch Linux forums too about it, some even from 2021 to September 2022 that lead me here FS#70099 : [gobject-introspection] lightdm-webkit2-greeter fails to run now since gobject-introspection update , and apparently some users preferred to downgrade webkit2gtk … also seen that approach here on the forum.
On a 2 years old XFCE install i have, i see greeter-session=lightdm-gtk-greeter in /etc/lightdm/lightdm.conf and i never touched that, and it did not bother me visually.