The overwhelming majority of Catholic canonized saints have only skeletal remains or less. Hardly any are preserved in a state even resembling “incorruptibility,” and in no way is such preservation considered a requirement to be met in the canonization process. God may choose, in His omniscience, to preserve some remains entirely, and not others. He alone is sovereign, and He has His reasons, either way.
So, given all that, your point in posting this (old) article is...what...exactly?