It would be utterly reckless, considering Johnson's dishonesty, to agree to an election until it is enshrined in law that there can be no no-deal either now or at the end of 2020. There is next to no chance that a trade deal with the EU will be signed off by then, and further extensions to the transition period will definitely be needed. Without a legal assurance that such extensions will be automatic (unless Parliament, not the government, decides otherwise), it would be foolish to allow him his election.

Even a teacher should be aware that no parliament can bind a future government. This makes your arguments somewhat vacuous and totally lacking in merit.