This is on purpose, these obscure aspects of their format, it is how proprietary software remains proprietary in modern times - complexity, undocumented aspects

This is on purpose, these obscure aspects of their format, it is how proprietary software remains proprietary in modern times - complexity, undocumented aspects, and inconsistency. This is on purpose, corporate policy-wise. It may not have been done explicitly on purpose originally, but Adobe realized what they had and leaned into their difficult file format on purpose. A friend used to be one of their senior software scientists, and he explained it to me in this manner when I complained.