Go read about HCM, it is not a great disease, it kills cats mainly at 3-6 years.
The cats look great, it is not a disease of poorly runts, big beautiful cats get HCM. It is called the silent killer.
It is genetic, one parent with the disease can give the gene to 50% of its offspring, so it is not a rare, "once in a blue moon" disease.
Scanning is the only means of diagnosis, vet checks do not uncover HCM, and there is no DNA test either for Bengal HCM.
Breeding unscanned cats is breeding blind and is doing a disservice to owners, who are buying, as one heart broken owner told me, cats that are born to die young.
A lot of Bengal families have multiple HCM cats in their pedigrees, there are no HCM free lines, the risk is ever present and for a breeder to ignore HCM is ridiculous.
I have a cat with HCM he is now 6 and is on 4 different medications daily which is costly, both financially and emotionally, and tying for me in that he needs an afternoon dose, but he is worth it