Honestly, you're starting to come across like the shitty media now - finding anything to nitpick at them.
They are required to travel as 'senior' royals, or often do so to find privacy during their private life, and when they do they offset the emissions to minimise the impact. It doesn't make them hypocrites, and doesn't mean they aren't environmentally conscious. I'm environmentally conscious but I drive a car, use plenty of electric, and travel abroad relatively often - I just try to have a positive impact elsewhere.
To be fair, you I presume do not preach to others about being environmentally conscious.
Ultimately though I find them annoying because they are royals. I dont mind or care about celebs telling us what to do, most of them have worked for their status. So has Markle I guess, but Harry, not at all.
We should be glad that there is less of them and hopefully Charles’ plan to downsize that whole thing goes ahead. Then maybe one day that institution can be fucked off and ended permanently, with the state seizing their assets.