Except it really isn't the same. When 5 speed freewheels were around people welcomed the extra sprocket. The same goes for when 6 speed became the standard. However when 7 speed cassette/freehub systems had become the standard I didn't really hear anybody complaining about needing another sprocket.
So when 8 speed was introduced, it didn't really seem to be a big improvement to anybody. However, it was an even number, and it wasn't an absurd number so nobody really complained it was too many either.
Then they introduced 9 speed. Everybody I knew started to wonder, when is this all going to end. Then came ten speed. People started to say, enough already. It wasn't all that long ago that there were ten speeds on the whole bike, now we need ten speeds on the rear cluster?
Eleven speed is just a joke. The same goes for electric shifting.