FAST BREEDING. “We do delete them, but they replicate so fast that we can’t keep up. Transposons, however, are not essential for a successful life. A little weed called the humped bladderwort. Only 2.5 percent of its genome is transposons, compared to 50 percent transposons in Homo sap.”
https://www.geneticliteracyproject.org/2014/08/05/how-much-of-human-dna-is-doing-something/