It can also be easily completed in longer.
Took me 3 weeks to do it at my gradual pace (and that's without going into eureka for the new challenge log because I'm already 20). I took my time and combined it with some older content as well.
Admittedly people who have been playing for a long time would have less older content to mix it with. For example, I used that to finally catch up on Hildibrand - which I did. So...next time I want to pace out content I won't be able to do that again as now that I'm caught up I will probably do the continuations when they are released. I also started using the new changes to potd Grip to work on getting those pretty weapons - once again if someone already has those, then that's not something to do. I also do hunts and did some achievements to get that pop up to disappear in more places. And sometimes I randomly join o5s/o6s practice parties to help new raiders out just for fun. Since I'm a healer that's decently geared, my knowledge of these fights can help make up for their mistakes as they learn and help them get their clear sooner, so I quite like doing that.
I'm not entirely disagreeing, considering that even at my super leisurely pace I still managed to do "all" the new content at least once(except ultimate and the 3rd new command mission)before the next patch, though without farming any of it for gear/doggo, just pointing out some people can draw it out for longer than a week. Though the gold saucer event,aetherpool grips, and gear/doggo farming that I will eventually do, and helping newbs out will definitely last me until the next patch.