Yes, for some photographers and filmmakers a modular camera backpack is the ideal bag. Though the best mirrorless cameras and the best camera phones mean that photographic equipment is getting smaller and leaner, some bag interior layouts just aren't functional for every photographer. That's because we all carry different lenses, accessories and other equipment to get us through the shoot. If you're someone who likes to switch up their kit or have everything in just the right place, then look for a camera bag with modular inserts. These usually fix inside the camera bag using velcro and can be ripped out and reshaped to fit any gear you have.
There are some camera backpacks (like the Vanguard Veo Select 43RB on this list) that give users the ability to pull out a smaller bag within the backpack so that they can travel even lighter and more efficiently should they require it.