Or is it maybe simply scam ??
99% of ICO's are shit. Even with these high profile advisors, how do we even know they are working on the project and have a role? We dont, because 99% of white papers are shit, and dont even talk about the role they have in the business. Who cares if a fortune 500 companies CEO is on the advisory board if he/she isnt doing weekly or at least monthly work. ICOs are just marketing 101 all over again
"How do they contact them" the same way you would contact that person irl. Have a previous relationship with them, email, phone, social media, irl contact etc
I mean some of these adviors are college professors, so it is easy to contact them. Who is going to say no to " be on our advisor board and we will give you 100k coins that we will presell for $.10 ( 10k ) and you can dump them 2 months after the launch. Can I take your picture and create a bio and you will get $10k"