Nowadays, entire wall panels (also made from glued individual stones) can be produced, but: initially shaping the material itself into small stone portions in the form and then having to glue them together brings no advantage. From a process technology standpoint, both large panels can be "handled" as well as door and window openings (and even recesses such as cable ducts) can be positioned arbitrarily. The material quality is the same, and for manufacturing plants it is apparently more practical this way. This applies to various concrete stone qualities, all of which are in a certain way solid. Wall bricks nowadays are usually provided with hollow chambers and cannot be manufactured as entire wall panels in one piece; with them, one must take the detour via the element size "individual stone" - but entire wall panels can also be prefabricated from these. Aerated concrete is similar to other types of concrete stone, and such things are not done with calcium silicate bricks.
The big practical difference on the construction site is logistical in nature: entire panels require large vehicles and large cranes, individual stones can be delivered and unloaded much more conveniently as pallet goods.
Since the same stones and adhesives are used for the individual stone wall panels as in the "stone on stone" method, the finished walls show no quality differences.
Processing a building material like that from Dennert or a competitor as individual stones would ultimately result in the same wall quality: the one millimeter bed joint instead of a continuous panel makes no practical difference.