Again, they claim the properties are similar to polycarbonate. The properties of polycarbonate are thoroughly understood, and are perfectly suitable for a drinking straw.
So again, what do you base this judgement on exactly? Do you have a sample of the material and can claim they are lying and it's not actually like PC and that it somehow fails when used as a drinking straw? Does it taste bad? Did it steal your girlfriend? Like what?
>Again, they claim the properties are similar to polycarbonate
The claim in the article is "strength" which is not a material property at all. Just a very vague description.
Besides that obviously they do not have the same properties, because the article literally says that it is being eaten by bacteria quite quickly in sea water.
"Strength" is also a meaningless metric to compare, it just is not a material property.