What the video shows
It shows shoulder movement as a reference for how different arm positions can change the load around the joint.
Video
A gradual return to load
The video reinforces that shoulder pain does not require an abrupt move from avoiding activity to full load. It is usually more useful to restore movement gradually, based on symptoms and the tasks that matter to the person.
How this may feel
Symptoms may only show up after longer work, training or repeated movements. This does not mean every load is harmful; it means the dose matters.
A sensible next step
A plan can start with tolerable movement and build towards a specific task, sport or job instead of returning to everything at once.