This opinion piece is kind of unwelcome, but likely completely correct.

https://theconversation.com/why-universities-are-starting-to-re-evaluate-their-academics-travel-177129

Why universities are starting to re-evaluate their academics' travel

The tertiary sector’s air miles may be dominated by a small number of hyper-mobile senior academics, but studies show virtual conferences can improve diversity, career development and emissions.

The Conversation
@rcorless I would be very happy to take a boat to NZ and back. Doubt my university would be all that happy if I did that during a teaching term...
@JacquesC2 it could work if you could "work from boat"!