At least here they are mortared shut. Acquaintances had built, and theirs were open.
You should stuff them with banknotes, which you then deduct from the architect’s fee
Could it somehow be that you are the only person on earth who is bothered by cutting stones?
Certainly not, because time is money, even when laying masonry. Technically, cutting aerated concrete is not an issue – but with bricks you can see yourself (the house pictures thread is enough) how often the butt joints are instead pulled apart or even mortared over. This is avoidable if the architect internalizes the correct modular grid. It wasn’t made up for fun or out of thin air, but in connection with the dimensions of the bricks.
In the next breath you proclaim that the mason is not bound to the millimeter, at best the centimeter.
Bricks don’t come from a CNC milling machine, masons are not watchmakers, mortar isn’t mixed by pharmacists, and time is money. That’s why building a house with nanometer tolerances would never work. But that is no reason or free pass to be lax in planning. An architect should be able to internalize the relationships between the dimensions of the "module" brick and those of the whole wall built from it. In the "new" format that’s not even hard to remember anymore.