That’s not true at all actually, running a PDS uses about as many resources as a regular personal blog HTML server (as it doesn’t do anything but serve up your signed posts), and running a relay with only the couple thousand people that have decided to host their own PDSes is home self-hostable.
Good blog post here clearing some stuff up: https://whtwnd.com/alexia.bsky.cyrneko.eu/3l727v7zlis2i
…Yes?
This is specifically about making the plc DID you’re given when you sign up (@username.bsky.social) move to the web DID you create when you verify your domain (@username.domain).
You can still use whatever usernames you want under your domain (@username.username.domain).