It’s clearly headed east. Sorry...
Sunlight is indisputable. Headed westward. Every high altitude contrail near sunset has solid coloration that is bright. Because the below horizon setting sun is illuminating the bottom of the high altitude contrail. Now look at the rocket plume again. Not uniformly bright. In fact when it really starts to angle out west, the right side is bright and the left side is dark. That cannot be reproduced by a high flying plane contrail. They will never be able to reproduce that effect with a plane contrail and they have failed so far. Maybe if their camera was on top on Mt. Everest they might stand a chance.