I found Discord to be extremely confusing. I was a IRC addict from 1999 - 2005 when I was very sick, so I am not unfamiliar with chat rooms. But I could not make heads or tails of Discord, and didn't often get replies to queries, or they came long after I was gone.
It seems, to do well on Steemit, you need to be doing something on Discord also, but for the life of me, I can't figure out where or how.
So I just muddle along on Steemit, trying to post each day, and commenting when I can.
It's a tricky one, lots of servers to become acquainted with.
I wouldn't say discord is a necessity to 'do well' on Steemit, although I'd like to hear some more views from people who have found discord to be the route to success here.