The European Union (Withdrawal) (No. 2) Act 2019 (the "Benn Act") effectively prevents a no-withdrawal-agreement Brexit on October 31st.
The Remain side are currently refusing to permit Boris Johnson to hold a general election, seemingly on the basis that he might use the provisions of the Fixed Term Parliament Act to bump the UK in to a no-withdrawal-agreement exit.
But the Benn Act precludes this. What am I missing?