This company is running a project with extremely high pressure and low temperature https://firstlightfusion.com/technology/#our-approach

Their idea is roughly by using a railgun, accelerate a projectile and shot a target. https://youtu.be/M1RsHQCMRTw?t=492

I found another article related to this topic. In this article, the author think this solution will not work. Nuclear Fusion with extremely high pressure and low temperature. Do you guys agree with this article's opinion? Nuclear Fusion with extremely high pressure and low temperature