YOU CAN'T EVEN QUESTION THEM!

Meanwhile in Palworld, you can butcher your pals with a cleaver and feed them to others. No pussyfooting here!

I'm talking entirely out of my ass right now... But I get this weird feeling that there's some kind of precedent... And it involves either vore or cannibalism (or both?)

Humans are weird.
Some cultures can't even think of eating cats and dogs - horses and donkeys. Because "they are family".
It is the same with imaginary digital friends.

Iirc the eating pokemon thing is against one of gamefreak's ToS bits and could get showdown shutdown.

I mean, while it is cannon, they mostly avoid it nowadays because there is so much weird stuff around it. While Pokemon are depicted as animals, many are suggested to be sentient and/or just as intelligent as humans, so things get very messy even within the universal canonical stuff, nonetheless stuff that they've swept under the rug.

A big part of moderation is enforcing what makes you (the moderator) uncomfortable. The moderator(s) probably have not come to terms with their views on eating meat, so the question makes them uncomfortable, so they ban the discussion to preserve their own feelings.

In a less selfish view, it also probably helps preserve the community because many others are also uncomfortable with their unresolved views on eating animals and might be discouraged from participating if it is discussed. You are probably a microminority in wanting to discuss it and the number of free speech absolutists who will die on the hill of your right to talk about eating roast mareep is also a microminority. As the discussion does not really add anything to the community it costs them almost nothing to keep people comfortable.