>>13042754all bricks are heat treated, they are extremely resistant for a time, but all brick eventually decay, moreso if you live in an area with high humidity/rain. Such a hollow design will lose structural integrity quicker than a thicker brick with your typical three hole combo. with so many small holes in your design, spalling would have a much more detrimental effect on the structure, because there are so many small crevices in which water can reside.
