You might consider learning Japanese and playing on the JP data centers as they tend to run a lot of this content without Discord/Voice Chat. You should see the diagrams and stuff they can fit into macros.

The "you shouldn't have to X to Y" argument always makes for great forum bait since while it is not strictly required, it it a tool that makes things much easier in terms of communication, coordination, explaining, recovery, and a whole host of other things.

I personally enjoy the fact that it "requires" Discord since I find it fun to hop into a VC and just chat with people and meme around while getting prepped. I'm curious why people have an aversion to voice chat though - is it a social anxiety thing?