Things may very well change. There’s nothing wrong with choosing a path and allowing it to change as op interests change.
The thing that is important to know is that no perpetration will satisfy the wants of every job posting. He can amass a strong record of academic achievement and experiences and still get ignored by lots of companies. It’s no reflection on him, but rather that companies like candidates with experience as they’re easier to vet.
In my son’s case, the company took a risk on him. He was the first new grad hired at a startup. They took that risk because his thesis, senior project and work experience were all in close alignment with what they envisioned him doing. They started him at a salary that surprised all of us. Without his MS, they wouldn’t have hired him.
Conversely, other companies simply ghosted him after applying. It was surprising because he had a high GPA, was a TBP member, and had great experience. It’s a lot like getting passed over by a school. It’s just the way it is.
Best of luck in the quest.