lemon, 1000s of flights are taken by those who certainly 'don't need to' - what is wrong with thinking about it, assessing your 'needs' and making changes accordingly.
The idea of flying to the other side of UK, Europe and even more, the world - for a few days, is just nonsense. I know many who come to our region from all over the USA and Japan for just 3 days ... Others still come to the event, but have decided to make it their main holiday of the year and add 2 to 3 weeks of European travel, to said event- using trains whenever possible. Just think - and try and adjust- nought wrong with that surely.
A week after we had made our decision and drawn our red lines- we were invited to a Conference in Madrid for 3 days. So we made it our main holiday- flew to Madrid, then used trains and buses to visit Andalucia and then Malaga then flew back from there.
Several EU countries, including Switzerland- are making a huge effort to bring back long distance night trains- as the most polluting flights are the short ones, as taking off and down is the most polluting part of flights. Flying from Geneva to Zurich, or Milan, or Munich- is just nonsense, and VERY polluting.
It does not have to be NO flights at all- so won't be signing either. But I have had it up to here with any effort made to assess one's carbon footprint and behaviour as in 'virtue signalling'