Actually, people who complain about all you need is bigger deathball to win in SC2 is living in 2010 because that's not true at all in TvZ,ZvZ,TvT,TvP. The game just has evolved greatly past that point. Deathball won't go anywhere but it's not the absolute way to play. It's just one of the way that has its advantages and disadvantages. There's a myth that deathball didn't exist in BW and that's wrong. I was a terran player in SC1 and mech deathball was the absolute way you crushed protoss in TvP.
Not sure what you are trying to point out. You are saying that SC2 has gone terrible? It has done very well both business wise and Esport. The game does have average viewer number comparable to Dota2 which is a MOBA game with far larger playerbase than an RTS like SC.