At this stage it’s a trope that people imitate, perhaps without really thinking about it. Originally it was almost certainly an ironic joke about the value of the medals, playing on the old-fashioned bite tests that would be used for for items of dubious worth
2 and 3 are massive. I’m on Mastodon, but am having a much better time on Bluesky. Mastodon is full of gatekeeping and policing and people complaining - Bluesky is just fun and interesting, like Twitter 12 years ago