For most camping, yes. A hatchet splits kindling, limbs saplings and drives tent pegs, which covers nearly everything a car or backpack camper needs. What it cannot do is fell trees or split large rounds, where head weight and handle length do the work.
Kindling from split wood, limbing, driving pegs, and light chopping. One-handed use makes it convenient and it packs far more easily than a full axe.
For a camper who buys or gathers wood rather than felling it, that is the whole job.
Splitting large rounds and felling. Both depend on delivering energy, which comes from head mass and handle length. A hatchet simply cannot deliver enough per stroke, and trying means many more strokes and much more fatigue.
A folding saw covers most of that gap more safely than either tool.
Hatchets are more dangerous than axes per stroke, because one-handed swings finish near your legs. Kneel or use a chopping block so a miss goes into wood rather than your shin.
Never hold the target within the arc. See what an axe or hatchet is used for.