from personal experience, it wasn't a big deal. once i opened the package and realized there was only a single disk, i put two plus two together, shrugged and just left it downloading through the night. enjoying the game a great deal at the moment.
fallout 4 is the bomb. pun intended.
THAT BEING SAID
i can understand, and agree with how dishonest the whole "not telling you you need to dl 24 gb of data" thing is. as mentioned multiple times by multiple posters, nowhere on the box does it say that a 24gb download is required. it was not made known before the launch of the game, it was not written even in the tiniest print on the box, on beth's webpage, or anywhere else. i can only imagine the frustration of players looking forward to the game only to have to get cockblocked by a poor internet connection or data cap. and beth isn't the only publisher guilty of this practice.
there are many ways to HELP these players, one of the most obvious being actually delivering the entire game in the box. when you buy, and receive a game in a box, that's what you're looking for. a game in a box. not a downloader client.
but if being HELPFUL is too much to ask, the least that could be done was to put that information on the box. this way, people can make an informed decision BEFORE purchasing. someone said that if you see only one CD within, it's obvious the game has to be downloaded. yes. that is true.
what's also true is that you can only come to that conclusion (like i did) after purchasing, receiving the sealed package, unsealing it, opening it up and looking inside. since time only goes forward, finding out that information can only come AFTER purchase. not BEFORE. you can't make an informed purchasing decision if the research only comes after.
it takes close to no time to put the info on the game box. if bethesda needs my help to do it, i have a number of designers willing to do it. some will even do it for free. it takes something like 10 minutes. 15 if you include the transferring of print assets.