While this feature made prototyping extremely fast, it was replaced in Meteor 1.3 with standard . The "magical" loading made it difficult to manage code as applications grew larger, caused namespace pollution (global variables everywhere), and confused new developers who were learning standard JavaScript patterns used in the wider ecosystem (like React or Angular).
Not all Minecraft servers update. The most popular anarchy server, 2b2t, runs on with a custom proxy. While you can technically connect using a 1.20 client via ViaVersion, it often leads to ghost blocks, desync issues, and broken crystal PvP. Using a Meteor Client older version built natively for 1.12.2 or 1.16.5 eliminates these compatibility headaches. meteor client older versions