From the abstract of the original paper:

The results indicated that microwave heating caused the highest release of microplastics and nanoplastics into food compared to other usage scenarios, such as refrigeration or room-temperature storage.

Why on earth didn’t they compare a different heating scenario? What kind of science is that? The take is not “microwave is bad”, it’s actually “Some plastics are bad, and worse when heated”.

Unless its a rare and obscure package (and thus more prone to be outdated and unmaintained), AUR packages are quite stable.