
I am conflicted on this issue. Commercial aircraft are the public transit of global movement. They should be the last curtailed.
Instead, shut down private jet airports like Biggen Hill for the real climate criminals, increase taxes dramatically on first and business class seats to pay for carbon offsets, and raise SAF share requirements.
Heathrow is already too close to London. Rebuild the north runway at Gatwick as planned and restore HS2 instead to cut domestic flights usage.

Why tell him at all. Just distract him…
Ask him to tell the story of how he was pulled out of the World Trade Center rubble and let his demented brain confabulate.