After testing Ghostty out for a while, though, I've realized that input lag is higher than xfce4-terminal, font rendering is blurrier with equivalent settings, the UI is still less consistent with my desktop, and it has three to four times the memory footprint on top of all that. Since xfce4-terminal is already using native GTK, so there's nothing gained on that front.
Disabling the UI cruft just turns it into a less performant version of Xterm, so unfortunately, this is going to be an uninstall for me.