And as a follow up, why donate to an org that has $200M+?
It is an "ICO" because in exchange of your donation, the foundation will recommend a token allocation for you in the genesis block. Nothing prevents anyone to create a "concurrent" genesis block with different allocations though. It's just that the chances are people are going to follow the one the foundation recommends.
So, in that sense... it's an ICO. Although not quite like an ERC20 token sale.
Typically with securities, there is a bar of quality to meet before you are allowed to sell it, but in this case there is not. So we all need to be as honest and helpful as possible so that investors who don't know any better don't get scammed by those who are claiming to change the world.
The upshot is that its a word that is synonymous with investment, but requires less responsibility. On the flipside, they could disappear and your are out of luck because the government won't regulate donations as carefully as securities.