If you're talking about magic being "in good hands" then I am pretty sure he just meant that Meteora was useful for being capable of helping to destroy magic. Also I really don't care who Glossaryck likes because he was essentially worthless after Battle for Mewni.
Globgor didn't do shit and Eclipsa just cared about her shitty husband and baby. I'm not counting supplementary books because if it wasn't important to be in the show it's not important enough to discuss here. Also their backstory is somehow even worse than the actual show.
And yes, Moon also did a selfish thing, but you know what? From the scenes with her reaching out to Ludo and Mina it seems she does at least care about people beyond herself. Some of it's definitely pragmatic in service of larger goals but Moon at least didn't mindrape them. She was completely right to oppose Eclipsa.
And time for my favorite part:>Eclipsa was willing to kill her own daughter for the sake of others
I'm getting pretty damn tired of seeing this. Eclipsa regressing her daughter to a baby (and yes that was the canon infantilism spell, NEFCY AMA CONFIRMED) was a purely selfish act.
She hasn't seen her daughter since she was a baby. She gets her daughter back exactly as she remembers her, with no trauma to deal with at all.
She wants the wand to free Globgor. She can't get the wand if Star's dead and the wand's somehow taken by Meteora or destroyed. She gets the wand and Globgor and the kingdom.
NOT killing Meteora would have gotten her absolutely nothing, except maybe killed. Eclipsa doesn't want to rule over the smoking crater that once was Mewni, which would have been the endgame if Meteora won. She wants her lifetime supply of Snookers and a retinue of servants and tons of new dresses and a museum's worth of paintings of her husband and Star sucking her dick, which she can only get if Meteora is removed from the equation. As always, she gets it.