My current two cents:

in the past he wouldnt have earned money on the Nord Stream (i think the US even felt betrayed), now the US/BlackRock will earn money on it. But Russia still has all the power to weaponize their gas delivery, so it seems that this is less optimal than directly selling LNG gas. I guess this deal might help balance the influence of China on Russia? Besides it weakens Europe, which is both in the interest of US and Russia at this moment. It still sounds suboptimal for US in my brains, so im sure im missing things