Brassicas are my favorite vegetables, and they are all varieties of the same species. The gene selection mimicked natural selection, just accentuating the expression of Nature's genes.
Viruses and bacteria have been gene splicing for billions of years, and that process achieved a dynamic balance by trying septillions of experiments per second for over 3 billion years.
Humans will NEVER accumulate that much knowledge before the heat death of the universe; there are not enough particles in the Universe to construct a quantum supercomputer can even enumerate the possibilities that don't work as a ecosphere wide systems, or emulate the gene sequences that Nature has already tried and eliminated.
I think gene editing and breeding cultivated plants are deliberately conflated by those who seek to privatize food and own all the patents.
In my opinion all genetic modification is derived from Rockefeller Doctrine which is pre-Nazi, Nazi and post-Nazi tech. The pursuit of perfection and the erasure of nutrition and terrain theory are dead giveaways.