>>/156283/
We have multiple domains as access options. We had others in the past like endchan.xyz and endchan.gg. Like with everything else these are also user donated, registered. We lost .gg for it was prepayed for like 5 years by a user and it expired. 
The difference between .org and .net is that .org is behind CloudFlare and cached/accelerated by it. Since some people are suspicious of CF we think it's a good idea to keep .net without. We also have onion addresses for Tor access. We have loki as well (I'm not sure if it's working at the moment) and had i2p too.
There is no difference between content. Since .org is accelerated by CF, it might be more quick depending where you are.

This  >>/156287/ is a fun read. I give it an rating of headcanon/10.
Josh gave 9chan to us because it didn't blow up he thought it will. And then we shut it down eventually because we rolled out our own imageboard engine and it took too much time and resources to run three chans.
That doxxing part is also a whole lotta gibberish, kinda creative tho. agatha2 is just a board not the site, and some users deliberately try to blend the global staff with the board staff in their narration to dupe new and naive users. And perhaps even themselves.