The bills as a whole aren't that bad
My question is, these polymer bills, do they fold like the old paper currency? If not it's a major hassle to carry if you always need a wallet
It's my assumption that they do indeed act just like paper currency. I havent seen one in person yet though.
the same was said about the previous notes. and the ones prior to them.
it's only a matter of time before the polymers are duplicated and fakes begin circulating
And just like today, there are ways to spot real and fake bills.
Check the American dollar bills in a light, there's supposed to be a visible face in the bill that can only be seen in the light. Fake bills cannot do this. That is why they tell you to check for the face.
Or the current Canadian bills, which can be checked for their special markings. These technologies are far more advanced than the counterfeiters can do today. They might get close, but they'll never replicate it fully.