Definition of "organic" according the Merriam-Webster dictionary:
a (1) : of, relating to, or derived from living
organisms <
organic evolution>
(2) : of, relating to, yielding, or involving the use of food produced with the use of feed or fertilizer of plant or animal origin without employment of chemically formulated fertilizers, growth stimulants, antibiotics, or pesticides <
organic farming> <
organic produce>
If you buy certified organic produce and save the seeds, you will have "organic" seeds to plant. After World War II there was a real push for agriculture to increase production to feed the world's hungry (so much destruction, so many people displaced, starvation was a real fact for many, especially in Europe). Chemical companies, seed producers, and farmers stepped up production by spraying, fertilizing, and using newly developed varieties of food crops.
However, people still saved the seeds from crops their grandfathers and great-grandfathers had grown. That is why we still have heirloom vegetables, virgin prairies, etc. So, I think the "we will no longer have organic seeds because they will all be altered." is scare tactics promulgated by those whose glass is always half empty and like thunderstorms better than sunshine!