Many people find it very annoying to play a slow game. They want to get on with it! And I don't blame them. I don't like playing multiple tables at once, but I don't want to wait 5 minutes for everyone else to decide that they are going to fold and I get new cards. I play the fast (but not hyper fast) games, sometimes two tables at once.
The site wants people to play more and play faster so there's a bigger rake. And that's perfectly understandable. There are lots of customers who want to play fast as well. So there's little point in moaning about how sites are ruining the game. Find the slower tables, or a site that has slower tables to your taste.