Yeah, most of that is just wild speculation, lol. Every source ingame refers to breeding like “they were playing together and then an egg appeared from nowhere!”, though some people believe that’s just what the adults tell the child protagonist. That said, you don’t even need wild speculation to be amused by the lore, as the pokedex lore entries already tend to be insane. They range from logistically nonsensical (Larvitar eating entire mountains, Alakazam having an insanely high IQ), to absolutely horrifying (several ghost types’ lore, like the Litwick line’s), to physically inconceivable (Lanturn casually doing the equivalent of shining a light through like 10 feet of solid concrete)
To clarify, the Pokédex entry for Darumaka in Pokémon White, Pokémon X, and Pokémon Omega Ruby states the following: “Darumaka’s droppings are hot, so people used to put them in their clothes to keep themselves warm.” So yes, we have confirmation that at least one Pokémon defecates.
I hope most of this just stays fanon speculation for the most part, because frankly these are not things that I need hard answers on either. Though I am... horrified at the conclusions people draw, and seek no further data because then I would *understand* the insanity. And I don't want that.
I swore in a very old episode, Ash, his friends, and Gary were at an excavation site looking for Poke-fossils. Gary eventually found a weird shell shaped one, but when a paleontologist examined it, he confirmed it was droppings. Idk if it's a dub mistranslation or whatevs, or if the show logic matters, but swear on my old Pokémon Blue, they indeed take dumps and are even fossilized, one way or another.
1:52 "we are *not* down a hot subject like..." I'm very tempted to go to the VOD to confirm my suspicion that they, in fact, went deep into that subject, because they're Bom and Ten.
If we think about not needing to poop or pee it just means they have a 100% efficient digestive system, and can cleanly convert matter to energy. The ramifications of this is insane but not needing to poop or pee is not that crazy in this scenario
That's definitely not canon to anything. Someone made that up outside of official sources. In fact, the Pokédex mentions droppings of Pokémon, and in the original and English dub of the anime, Gary finds a piece of Pokémon coprolite at a dig site. And that's the scientific name for fossilized poop. Yeah, I just looked it up myself, it's literally from a subreddit with "Conspiracy" in its name. It's not true to the games nor anime. I thought so. I feel like it would be more common knowledge if that was official.