Why did physics not a professional course

I wonder why they regarded engineer more than physicist.

A practical way to tell the difference: Which one must carry Professional Liability Insurance in case they make a mistake. Which one can cause property damage, death, injury, loss of freedom, or loss of assets. If you can, in the practice of your job, you are a "Professional."

Medical Doctors, Engineers, Lawyers, CPAs fall into that category.

In general, physicists do not.

Engineers learn more about application of physics (useful), and physicists look at expanding physics theory (abstract, less practical)

Engineers are considered professionals and can get a job in industry with a bachelor's degree. Physicists require masters or phd to become a professional.

Not many companies are in the business of exploring abstract theories, they want cutting edge technologies, which are developed by Engineers.