First off, i want to say i am most probably biased, im neurodiverse and the nd characters in this show (Luz, Hunter, Gus, Vee, and others), just spoke to me on such a deep level,quite possibly a deeper level than any other media ever will.
Anyways, this finale did such a great job under such terrible circumstances (a full 14 episodes being cut causing them to have to do some truly drastic rewrites), Character arcs come to beautiful conclusions (especially Luz) and Belos once again proves himself as the best villain in Disneys repertoire, even beating out Darth Sidious, Bill Cipher, Darth Vader, Doofenshmirtz, Darth Maul, Scar, Darth Sion, pretty much every Darth. Also he legitimately has one of the funniest scenes ive ever seen in this episode, funnier than THAT Mermista line from She Ra.
Now, there is a problem in the finale that both isnt too important, and i just don't think its fair to hold them accountable for, and that's the 12 minute montage at the end. Owl House was an extremely ambitious show, and there is no way it all ever could be perfectly wrapped up in 3 hour long specials. Not like any of the stuff in it is bad, just certain scenes (regarding Amity and Vee especially) needed 2 minutes to themselves at least.
And that is pretty much all i can say without spoiling some transcendent TV, all i have left to say (though this is subjective), is if this finale had 10-15 more minutes it'd have a good chance of beating out Star Wars: The Clone Wars for the best Finale of all time
Actually one more thing, if you are also mad about the missed potential, then they tease a spinoff multiple times in the episode. Good chance nothing comes of it, but if it does you better be there day 1 random viewer.