When considering the initial probability question regarding Linda, it strikes me that it isn't really a choice between a single possibility and two conjoined possibilities.

Giving a person an exclusive choice between "bank teller" OR "bank teller and feminist" will make people imply that "bank teller" means "bank teller and not feminist".

So both choices are conjoined items, it's just that one of them is hidden.

Given this, people may not be so incorrect after all.

Edit: People should probably stop giving this post points, given Sniffnoy's linking of a complete destruction of this objection :)