Just restarted the containers. Server usage is only around 20% so the issue is more likely to be lemmy-related and hopefully fixed in the next release.
Posting the same thing to 20 different communities is spam imo, even if they aren't all on our instance. Stuff like this can get your entire instance banned from federating with others, i don't think this should be supported and the people here seem to agree. There hasn't been a rule so far but we should probably add something similar to r/monero where you can only advertise every 2 weeks as well as limiting reposts to your own community and a limited amount of others (so cakewallet can post to the cake community and monero for example).
I don't think that is necessary for this specific post. If anyone wants to make a sticker/outreach community for future posts, please do so and let people know about it in the Meta sub :)
Only illegal or completely unrelated (spam/scam advertising) content will be deleted by me (mods can however do as they please in their respective communities). So far there hasn't really been any need for moderating and I'd love it to stay that way.
Even then, if you etch or print it with a machine you don't plan to keep airgapped forever afterwards, your seed isn't truly secure.