I've been using it since it felt usable enough in GNOME to me. Around 2015-ish, give or take a year. GNOME leading on Wayland support is a big part of why I switched to it from Xfce back then. Nowadays KDE and others have plenty good Wayland support too (better in some ways like allowing server-side decorations and global shortcuts) but I just haven't felt like trying to properly experiment to see what I like.
I've always avoided Nvidia on my desktops. Stuck with either radeon or intel and never had any exceptionally big issues with them on Wayland. Though other things like hardware accelerated video decoding have had a history of being spotty on some drivers/GPUs.