City villa with brick cladding - Which facing brick / clinker?

Good evening everyone, is it important with a normal single-family house, city villa, fully clad with bricks, to pay attention to whether the brick is absorbent or not? Acquaintances said it was important. However, they could not explain exactly why. I have not read anything about it anywhere so far. Can someone tell me something about it? Thank you very much

in a normal single-family house, city villa

Even in an abnormal or even crazy single-family house it would be exactly the same: the term means that the stone takes up more or less strongly the water contained in the mortar during masonry. But you don’t need to worry about that: the different stone qualities in this respect are matched by appropriately different mortars. Bricks would be pre-wetted, with clinker this is regulated through the mortar, that is, its recipe. No witchcraft. Just pick the clinker according to your taste, the rest is done by the masons.