So do you think that, when people feel utterly powerless because somebody has deliberately taken away a beautiful thing that brought joy to the lives of so many people for so many years - for absolutely no reason and for no gain to themselves whatsoever other than to narcissistically feed off and have a laugh about the resulting mass devastation they caused - they should just be stoic about it and shrug their shoulders, accepting that the nasty people can freely have whatever they want, but everybody else just has to roll over and give in?
If somebody got a crane with a wrecking ball and demolished your house whilst you were on holiday - just because they thought it would be a tremendous laugh and would hugely upset you when you found out, to much hilarity on their part - would your instinctive, neutral reaction just be "Ah, well, the courts will give them the appropriate punishment" and nonchalantly book into a Premier Inn in the meantime?
Why are you seeking to minimise and criticise people's wholly reasonable anger?
Whatever the legal punishment handed to them, their lives will never be the same again anyway. Everybody will know how hateful and nasty they are, how deceitful and unwilling to own up to their choices, and just how utterly stupid they are for thinking it a wise thing to do in the first place and then going out of their way to carefully provide so much crystal clear evidence that it was them who did it.
Nobody will trust them in anything, nobody will employ them, nobody will use their businesses. Nobody will want to be seen with or identified with them - which is a hugely unfair situation for their poor, innocent children.
Whatever else they do in their lives, they'll always be known as the thick arseholes who deliberately destroyed a beautiful landmark for no purpose whatsoever.
But none of these things will bring back the beautiful tree and world-famous landscape that generations of people have enjoyed. It's the ultimate example of 'this is why we can never have nice things'.
People have a perfect right to be angry at these despicable men and what they did.