I don’t think anyone is in favor of relaxing DUI laws.
If it remains a black market good, that precludes a lot of safety and regulation. Humans love drugs. If I was writing a sci-fi setting, drugs would probably be the Human Special Thing. They’re not going away. Focus on harm reduction. And as far as harm from drugs go, marijuana is pretty low on the danger factor.
Biden is pardoning thousands convicted of marijuana charges on federal lands and in Washington (apnews.com)