I finished with Bird Brain yesterday, and was able to get the CM today.
But I don't feel any sense of accomplishment.
Mostly I am just mad at both those fights for being horrid RNG fests and wastes of my time.
The last CM that I remember being so rough was the Turnip heads on XII.
But when I finished that one I felt good melting those vegie heads with the poison OSB.
Plus it felt there was multiple useful RW for that which you could try.
This the damage output on both fights seemed to require wall and then still you had to get a lucky RNG to give you a few single target attacks at some point to not wipe.
And with the bird being so fast I couldn't count the number of S/L I had right off the bat because I didn't start off with enough bar to survive his ridiculous onslaught.
Also I think one of the things that really pissed me off was the dark medal on Xinde.
If you want to reward me for hitting a weakness ok, but don't pigeonhole me by forcing me to use an element with no advantage over a regular physical attack.

So I guess I wanted to see if anyone liked these battles or even felt a sense of accomplishment after winning?
Or was everyone like me and just felt that they finally got a lucky RNG on the AI after trying the one way you could make the battle work?

On the other hand the MO was much better than Kuja was but suffered the same issue that you were fighting the other players in a pug more than the enemy.
I do wish you could set up conditionals when making a room.
Like I would have liked an auto kick on anyone who brought an accessory that only boosted a stat instead of having some sort of resistance.