It's nowhere near finished. Besides the bugs, a bunch of things are either half-implemented or completely missing. It has come a long way and it's certainly playable (to an extent, the radar is kind of a mess, the designation logic is not entirely correct etc etc), but it still requires a lot of fixes, changes and additions.
it's finished by ed's standards. they shifted to the f-16 months ago, next will be the apache. hornet is done outside of miscellaneous bug fixes or game-wide tech updates
my mistake, i forgot about the magical early access label