The idea that they don't matter came from elitist player builders who basically snapped at anyone who wanted to get pancakes for their O-lineman. They assumed that if you build for pancakes, your blocker can't block as well as someone who built for holding blocks. This has always been ridiculous because you can build players to do both just as well as someone who's focusing on one aspect of blocking. And yes, they are huge for reducing morale even without Showboat Blocker.
And Mister Blob wins, though I hope my C can compete with him next season