I remember him being against bitcoin, he even called bitcoin a "scam", I wonder what changed

if you ask me, none of the presidential candidates is better than the other, both of them are bad, and both of them only care about the interest they have and the interest of the people who are heavily invested in their campaigns.
In other words a convicted felon who has an international Red Notice issued for him is going to speak at a Bitcoin conference... where is the facepalm emoji when you need it...
here 🤦♂️🤦♀️ hahaha