The EU will remain whether we are in or out, so the referendum result will make our borders no weaker or stronger than we can make them now in terms of security. Being out of the EU may mean we can control numbers of those wanting to stay, but travellers with a European passport will still be...
That's because it makes no such suggestion. The criticism is of security agencies, not operating effectively. As we will find over coming months, people will jump at things and adopt / adapt them for their own needs.