It's not so much that it had a lesson that bothered me, so did episode 3 and that was fine. It's just, The Power Of Friendship is the one I've gotten the most sick of. Yeah, teamwork is great and all, but it isn't absolutely omnipotent and it is possible to do some things without it. But the moment any character in any cartoon ever treats friendship as anything less than directly channeling God, they are absolutely guaranteed to fail at what they are intending to do until they learn that lesson. Just once, couldn't a character be friendship neutral and be okay that way? Say yeah, friends are good, but they don't solve everything in all cases ever.
Of all the cartoon lesson of the episode cliches, that is the one that has been driven straight into the ground. The others get variations, level of nuance, but the Friendship lesson is the same thing every. single. time. Just once it'd be nice if the hero's like "This time I'll prevail, because I've got my friends with me!" and the villains like "Yes, but you still don't have the Orb of Light, so I don't care."