Hello aspirant!
Hope you are doing well.
No, there is nothing like that. Bams scope is increasing day by day because of it's effectiveness during this covid time.
There is so much scope of doing bams.
You can work as

• Medical officer
  
• Professor
  
• work in hospital
  
• Open your own hospital
  
• Can practice modern medicine too
  

Panchkarma is very famous in foreign countries and people from far come in India for this therapy.
Kerala has so many centres for Panchkarma and it is very famous for it.

Further you can know more about Bams course by going through the link below:-
https://medicine.careers360.com/colleges/list-of-bams-colleges-in-india

Hope this helps you
all the best