“Which is impractical, as Canadian retailers lack direct control and influence over the global supply chain,” said Michelle Wasylyshen, the council’s national spokesperson.

See, this wouldn't be a problem with EPR. Grocers could still buy plastic-wrapped avocados from Mexico or whatever, if there were no other options, because the extra cost to cover disposal wouldn't be prohibitive without any competition. That's not the approach they're going with, though, so they're probably going to have to carve in a lot of exceptions.