I've owned ceramic kitchen knives since Kyocera first introduced them in the 1990s.
They are good for prepping soft vegetables, maybe certain meats like chicken and firm fish. Too light to chop. Can't cut or slice certain veggies like carrots. Red meats will stick to the ceramic as you try to slice it. Not good at removing fat or gristle.
Blade will chip if you try to slice hard, crusty breads.
If anything, ceramics may be useful as part of your cutlery collection, if you need to garnish your dishes. As a primary knife or only knife, it sucks.
As a pocket knife, it's still a toy. You'll find yourself looking for excuses to use it on things, but it isn't better than steel knives for daily chores like string and boxes. It may chip when cutting cardboard and may crack if you drop it.