Making it take longer to get through a set amount of content doesn’t increase the amount of actual content. I’m not sure why people have trouble understanding this.
If people can work through all the available content of a patch in under a day, it’s because there was less than a day’s worth of content.
Blizzard gating that to take a month instead doesn’t magically turn it into a month’s worth of content, and parcelling out a tiny piece of content to stretch it out as long as possible instead of developing more actual content is the hallmark of laziness.