Here is a breakdown of the context and the likely reasoning behind that opinion:

"Server timed out." Fix: IMC servers use WebSockets. Firewalls often block port 25565. Use the ws:// (unsecured) link instead of wss:// if your school blocks SSL.

But if you’ve tried the "vanilla" web versions recently, you might have run into limitations: no mods, laggy performance on big servers, and a lack of customization.

EaglercraftX 1.8 allows for customization similar to the original Java Edition:

: