Whether you are a Reddit refugee (I am one) or just randomly stumbled upon Lemmy and decided to join lemmy.world, welcome to the Fediverse.
If you have been here for long enough and settled in and now finally feel comfortable with Lemmy, I highly advice you to move to smaller instances. I just newly left Lemmy.world to join Lemm.ee.
We need to capitalize on the decentralized nature of the Fediverse and Lemmy instead of having everyone joining one instance. This will benefit the admins of Lemmy.world a lot as they would not have to deal with such a high amount of users. It also leaves room for new users to join and have a good experience rather than an experience filled with server outages where they will give up on Lemmy.
He’s saying the later, that you should make an account on a smaller server and pull content from lemmy.world (and other servers; lemmy.world isn’t the only instance with content).
Due to the nature of federation, every action has to get pushed to every other server, so it doesn’t help much if the communities are all on one instance, but it helps a little. For example:
If 100 people use lemmy.world, their server has to load all pages for them and push their actions to all other servers.
If 70 people use lemmy.world and 30 people use civilloquy.com but exclusively post to lemmy.world communities, lemmy.world has to load the pages for only 70% of people, but it still has to push all their actions to every other server.
The larger load benefits is breaking communities up among different instances instead of centralizing everything.