Because too much of SC2’s design catered to the progamer crowd that liked that kind of stuff. They made some things easier from an APM standpoint but intentionally added more things to make the have not APM intense.
They really bet wrong on how popular that approach would be.
Yeah, the industry as a whole has been moving away from these types of processes for the last 15 years. There are exceptions where it can still make sense but they have significantly higher risk profiles than video games do.
I didn’t mind the cards, thought they were kind of fun during the free weekend. The Dawson’s Creek style social stuff (that seemed like it was half the game) bored the crap out of me though.
I think this is just an excuse to delay it. I don’t think there’s that many big releases coming up this year.