I suspect at least one use case has gone away since the Fowler wrote that: wanting to saturate the write channel into a database in general. Consistent hashing document DBs like DynamoDB, Cassandra, etc. are basically infinitely scalable for writes. It's not clear to me if LMAX still makes sense if you want to assemble the db writes into a strongly ordered stream.
I don't really understand what are you are saying there ?
But we use disruptors for processing millions of messages/events as quickly as possible, with a variety of different consumers.