I honestly do not understand why I m getting downvoted here. Am I saying anything untrue? Or did I only find a flaw which is not mentioned here?

Imagine leaving a house unattended in a humid or rainy area for one year, you would come back to swollen up windows which I am sure are far from clear. I guess you would have to replace these windows at least 5-10 times as often as regular glass. Also, glass is 100% recyclable whereas this would produce even more plastic waste.