I find it strange that the suggestion that many people didn't really understand what was involved in the choice offered at the referendum is seen as insulting those who voted for Brexit - but that the policy Labour purposes to offer the voters is far too difficult for ordinary people to understand. That's surely a hell of a sight more insulting.

What's difficult about it? Let the people decide whether they prefer a Brexit deal that has offered by the EU or for the UK to remain in the EU and keep working to improve it.
A binding referendum this time, and on a real option, not on a mere slogan.