I often look at deep themes that connect MLP episodes to my life experience, and I will do that here, too:

THE ELEPHANT IN THE ROOM

This is one of those episodes that trigger my cynical side due to related experiences. In the end they say they got inspired by the play, but really? Charity Kindheart did a big thing before and people were willing to help there, too, despite it being so big. She left and all spirit vanished.
I.e. people love bullshit. The obvious point is that inspiration is exactly what did not happen. Inspiration doesn't mean to follow a strong leader when prompted to. It means becoming one yourself. Living what you witness. They proved that they weren't inspired through their inaction after Charity left. But of course people are always eager to state their bogus beliefs about themselves. And in the case of the moustached pony it's not even a surprise: He had shown how full of shit he is before when he mentioned how 'busy' he allegedly is, with not a moment to spare, while lazily enjoying the sun on a float. (Hm, where have I heard stuff like that before? ... Oh right! Galacon 2014 charity song collab project, from The Living Tombstone.)

It's only a happy end in the sense that they found a replacement leader figure and gave her an initial boost. Give it a couple more events like that and then imagine what happens if Coco Pommel leaves. She'd better find a successor in time. ... But what's the point of doing all that if it doesn't really inspire people anyway? How should it be uplifting for the ones making the effort?
That gives this episode an unspoken grim afterthought, a sister-message that is overlooked in the limelight of the star.

I would tag-line the episode: "Doing free energy giveaways in vampire town".

All talk, no walk. The usual. It's everywhere. Deviations from it are a rarity.