Noted lines at the end of the article -
"Many environmental groups are sceptical about attempts to develop sustainable aviation fuels, believing that it amounts to green-washing. They argue that people should just fly less.
"Sustainable aviation fuel is not a silver bullet," Derek Vardon says. "
Well who cares honestly... I'm all for taking steps to mitigate the effects of climate change but I also enjoy aviation - and there are millions like me (maybe not "enjoying aviation" to the degree that they sign up on a dedicated website but millions who, once Covid is under control, will want to return to the skies worldwide for any variety of reasons).
While domestic flights within small European countries can, and quite frankly in some cases should, be replaced by high speed rail, aviation as such isn't going anywhere - nobody wants to cross the Atlantic by sailboat.
And that's not even taking into account the massive emerging aviation markets in Asia, Latin America and eventually Africa.
Climate Change can conceivably only be averted or mitigated through technological solutions as this one.
A solution that boils down to total abstention from something that people have grown to enjoy might make you sound intellectual and woke in a grad school post-growth economics book club sort of filter bubble, but amounts to political suicide in real life.
And since most of the countries that are currently responsible for the highest per-capita greenhouse gas emissions are democracies, proposals to slow and eventually stop further harmful emissions need to be able to gain majority approval.
Thus, simply banning flights will (thankfully) never work even though it is the most ideologically pure and least "greenwashing" proposal, whereas a smart technological solution like this that can dramatically lower the carbon footprint of aviation, and maybe even make it (near-)carbon neutral in the mid- to long term, should be widely accepted by anyone other than maybe the fossil fuel lobby.
But they, just like the super-radical environmentalists above, can get lost too.