In December, he launched his own cryptocurrency company, Efforce.
This ^^ is the part that tells that he indeed believes in crypto.
After this company was made, all his further public declarations on the matter are biased

But I don't deny either that they do help

I guess when it furthers their interest, people will side with some of the things that they previously didn't care for or have previously opposed. Also, it's not like it's worth to listen to what he says because as you've said, it's biased.