It's not just steam it's all the digital distributors. I have more games in my collection than I really wish to admit (or that I do admit to my wife) and I can assure you that all 3 of the big boy digital distributors have their slowdowns, I remember when GamersGate was the worst of the worst to get patches out in a timely manner.
Just takes time for their staff to get the patch fixed up for their distribution system.
Just takes time for their staff to get the patch fixed up for their distribution system.