I mean...that is kind of obvious.Absolutely. When I answer the "how long is the game" question, I always say "It depends on how much you choose to do". There is a MASSIVE amount of optional content in the game for those who want to play it, but not everyone plays a game like Wild Hunt the same way. Some people choose to basically play the critical path (the core storyline that gets you from the start till the end of the game). Sure, maybe a few sidequests or a little exploration, but mostly the crit path and done. These people will still enjoy the game as the crit path alone is a great story, but they will not play for 200 hours. Other people will do more side quests or crafting, or exploration or Gwent games or take longer in combat or whatever. These people will play between 50-200 hours, again, depending on how much they choose to do. And there will be those people who do absolutely everything, read all the text, scrutinize maps, plan combats to the letter, visit everything, see everything, collect everything. These are the people who will get 200ish hours out of the game.
There is a lot of optional, fun content in Wild Hunt, but what you get out of it, depends on the time you put into it. Your results may vary.