I would guess it is how each developer choose to implement it. Markdown is really just simple text. Usually apps are enriching it based on that, but each can implement it differently. Obsidian.md is how I like my Markdown to look. But it’s not a Lemmy app. I think they use front-matter or something
I think many people assume it’s those seats. Like in Japan… at least I did. But this is not correct, not all of them are. In my country we use these ‘wands’ which work when you turn on the sink faucet. Has a little finger trigger. It’s very convenient, clean. I’ll never go back!!