You are right, peppers without chemical fertilizers and in the open field are usually only 4 or 5 per plant.
But even if you fertilize them with biological products, such as E.M., worm humus, organic compost and some beneficial bacteria you can get up to 10 fruits per plant.

I don't use a lot of chemicals, we also use organic products and microelements so that the soil is not weakened.

And regarding the hybrids, they are not genetically altered, they are simply the cross between two species, to have higher yields and resistance to viruses and bacteria.

I hope you find the information useful, success and good luck.