It's like ten minutes, and you never have to touch it again. Not exactly a game breaker.
Yeah, but you only know that after playing the game substantially. It's kinda like the camp stuff in RDR2, if you go into the game blind and don't know much about it, it seems like the camp activities -- cutting wood, cooking, providing food, fetch tasks, upgrading camp, etc -- are a major, major part of the game... Hell that's how the game presents it. Meanwhile in reality after you've playued 50 or 60 hours, you realize, like, oh, that camp stuff is all optional and not important at all. On subsequent play throughs I pretty much just ignored it all, but as a first time player there's a lot of people who ask "... do I *really* have to do these camp activities like carrying hay around...?" And the answer is "no," but you wouldn't know that from playing the game the first time.
In FO4, the settlement building was optional but a lot of the side quest design was built up around supporting settlement building and collecting junk. A lot of the hook of exploration was "Go explore this Robot factory to do this unimportant side quest, BUT there's added value because you can find telephones, and telephones have springs in them, and you need springs to build an armor repair kit for your settlement, and you want to protect that armor repair kit so you better invest in securitrons and turrets..." A lot of the game was designed around the settlement building even if you wanted to ignore it. I liked settlement building at first but then it became onerous and I didn't like it as much as I liked just "having a home" in Fallout NV or Skyrim.
I'll still scope it out for this, I assume it'll be a major focus of the game.