If it's about quantity over quality, then yes. I'd rather take a game with a small number of interesting side-quests in a densely interactive environment over a game with 4,000 interchangeable grindy fetch quests in the biggest open world map ever conceived.
If it deals with the main game then a games length can sometimes be to its detriment. Padding a games length with filler it is still content though it doesn't really benefit the game.
If its bonus material, extras, and expansions its harder to do but still possible. Collecting bonus shit that serves little to no purpose other than a 100% game file is padding. Extras are usually good but then you get weird shit like Kart racing in Mortal Kombat Armageddon and you just know that time could of be spent else ware for better results. Expansions when done right are sometimes even better than the base game but the can also bloat the game with gimmicks or even ruin core mechanics.
Basically, its not a strictly numerical value of content, but the quality of the content that is the factor.
Adam Long
I'm currently playing through Origins right now, and I agree. I autistically HAVE to get 100% completion anytime I play an AssCreed. General collectibles aren't too bad, since I just put on music or a video and can knock off all chests in a day. But I've done like ~60 (mainly sub)missions in Origins, and I read that there are about double that, and this seems like too much. I heard Odyssey is even fucking worse
Josiah Brown
It's why I'll probably never finish Trails in the Sky. I looked into it because of the story, but I was immediately overwhelmed by the shamelessly massive amount of optional dialogue.
I'm OCD about trying to see all that there is to see.