I don't know much about PT but I am an ultrasound tech. Are you sure these techs are going to 10 month schools? I'm aware of 2 year programs that are strictly ultrasound however, none shorter than that. The program I went through at Boise State University required I go through a diagnostic radiology program first (one to two years of pre-reqs plus two years of x-ray). This resulted in an associates degree. Then, my ultrasound program was 12 months long and I got my Bachelors. In all, I went through 5 years of school.
Why do we make so much money? Well, ultrasound is unique compared to other imaging modalities (x-ray, CAT scan/CT, MRI, nuclear medicine, radiation therapy etc). The ultrasound tech scans a patient and takes "representative images" to show the radiologist. The ultrasound tech provides an interpretation of anatomy and pathology and the radiologist uses this information to make a formal diagnosis. In essence, the ultrasound tech carries a lot of responsibility to make sure they are not missing any pathology and when they do find pathology, they have to image it, characterize it and think like a doctor. If I see an echogenic liver and ascites, I begin thinking "Is there flow in the MPV and splenic vein? Is the ligamentum teres recannulized?" If I scan a testicle and see a mass, I begin thinking about the left renal vein and the left kidney. I look for enlarged lymph nodes. An ultrasound tech has to have an extensive knowledge of diseases in all parts of the body, which is no small feat. In addition, they have to be able to scan proficiently, and efficiently and in a manner that tells our "story" to the radiologists. Think of all the things that can go wrong in an obstetric exam. Do you know all the signs of a fetus with Down Syndrome? I do. I could go on and on.
Basically, this is a very professional job. You said it is non-professional but I'll chalk that up to your lack of knowledge about the profession. Like I said, I know nothing about PT, but I'm not going to jump to conclusions and say you aren't as deserving of the pay you receive.