I've read some of these posts, and I agree on the Eclipse theory...
I really can't figure out why, I just think that it is the only way to connect the two titles.
Or maybe in the "Sun" game they destroy the Moon to put the world in a constant "day", and in the "Moon" game they destroy the Sun to put the world in a constant "night" (although everyone knows that it's not how this works in the real world...). Kind of like in generation III where they wanted to make the world "all water" or "all earth" (though I don't know the reasons, as I never played those games. I would have loved that, but I don't own any Gameboy...)
Maybe they want to make the Pokémon who thrive in the night/day more common than their counterparts, for some reason. Or it could have something to do with energy and world domination. I can't put my finger on it...
The thing is though, Archie/Maxie's goals made at least some real world sense regardless of how stupid they were. If it rains a lot, and this rain isn't just coming from the planets existing water supply, the planet will flood. If you make a planet hot enough, you'll evaporate its water.
On the other hand, destroying the Sun/Moon is just a ridiculous idea. The moon doesn't cause night, the planet rotating does, which we know happens in Pokemon because that world has hours, days, weeks, months, seasons, and years. The sun does cause day by being the primary source of light for our entire solar system, but blowing it up is instant genocide because it gives us necessary vitamins, is the start of every food chain, and provides most of our warmth.
To be honest, I'd prefer if they only
threatened such ridiculous ideas, and the PC has to stop them.