Simplex isn't complicated, tho.
nostr:nprofile1qqsd6gzh24hc3fjv4ng8t5q87xlysru5njgl6mgvf4vnhtxdk24tmcspz4mhxue69uhkummnw3ezummcw3ezuer9wchsz9thwden5te0wfjkccte9ehx7um5wghxyee0qywhwumn8ghj7mn0wd68ytnzd96xxmmfdejhytnnda3kjctv9ugl2dgm recommended Deltachat to me.
More people should use it.
Simpler than Simplex and default encrypted unlike XMPP.
Discussion
well maybe if you take full advantage of it
hosting your own relays and trying to get people to connect to them over tor
it has sane defaults 👍