....They are acting like modern day crypto Robin Hood sending 0.88 BTC to both of the charities.
It looks like the hackers are only trolling or looking for fame. Although 0.88 BTC [$10,000] is a big amount to most, it's nothing to how much they have extorted from companies they attacked. They could have used a mixer too and not announce that they sent it to a charitable organization if they were serious.
Children International replied that they will not be keeping received Bitcoin if it is connected to hackers.
What are they going to do? Send them Bitcoin back or what send it to police

Hackers also use Unitade States service called The Giving Block that is used by 67 non-profit organisations worldwide.
https://www.thegivingblock.com/BBC also tried to donate, and they are wondering why there is no kyc verification....
Why would you ever need KYC for donation?!

Is The Giving Block next in line for some crazy punishment?
Hehe. The Giving Block already said they will be returning the amount donated to the rightful owners so no punishment for them. I believe Children International will do the same. The authorities will probably act as intermediaries in the distribution but I wonder if the companies will be happy to receive a thousand dollars each.