This is just my thoughts from a grumpy old gamer. For some of use the “new, more reliable” discord gaming leaves a lot to be desired. The posts tend to be short, fast and without much to them. It is like the difference between having a real relationship and internet porn.

There are different struggles that I see. 
First, people are becoming less literate. Facebook, tweets, texting, et al have created a culture where people are rewarded for short posts. 
Second, blocking - people have a hard time writing themselves out of character blocks. So we wait and wait for someone else, then we loose interest because our partners are not reliable. So instead of talking to the S.T./G.M. and working through it, we walk away. 
Third, Over controlled story arc and free for all, it is a hard balance between these too. An over controlling GM can kilL a story if they are out of sync with their player and player will go crazy if there is not a broad story arc going.
Finally, people are sensing stress with this Covid stuff. More than before and that slows down creativity.

The truth is we have a hard time communicating with each other, discord does help with that. But for some of use more verbose players that character limit stinks.