Do not believe them for a second.
Cancer treatment ans blockchain? Run as far as you can get form this one, 100% scam.
No legitimate cancer treatment which has shown good trails needs tokens to get them going, big pharma would rush in with stacks of money before we could blink.
RED FLAGS ALL OVER HERE
I don't understand why it is so strange for you that this project wants to use blockchain? I think that Blockchain will be used in every sphere of our life soon.