I believe it’s 6/hour - luckily I can reuse the URLs for any I’ve uploaded already. It always seemed tailored towards having one per post, but one massive post certainly sounds more reasonable.
If my count is correct (it’s probably not - I’d guess it’s low), I’ve uploaded 79 different ones so far and have 20 that are probably all too wide that I haven’t yet, though there’s overlap in different crops among both groups. I think some are clear winners, but there’s a lot in there that it’d be hard for me to pick the ones worthy of being official emojis.
Ah, the aspirations of conservatives always astound me.