We'd love to (and, tbh, likely will).

Search had been a blocker, but that's coming soon; beyond that not sure that there's any reason other than inertia. Alacritty is totally fine, but excited for the Ghostty focus on performance (obviously), and the font rendering stuff looks excellent (though TBD how much of that we can "just use" vs needing to copy-pasta)

Note search has landed in main, and the core of it is cross platform and exposed via libghostty (Zig API, C to follow).