Correct.
His very own source that he keeps citing agrees with you.
DOES NATURAL SELECTION EXIST AT ALL?
The remarks made so far, however, do not refute the occurrence of natural selection. In spite of the problems just mentioned, it is self-evident that physiologically, anatomically, and ethologically damaged mutants and recombinants (to speak again in the contemporary genetic language of these individuals) will be at a disadvantage in many situations (lame prey in relation to their predators and vice versa). It is only on islands with loss or diminution of stabilizing selection that processes of degeneration may occur quickly (for further discussion of the topic, see Lönnig, 1993, 1998; Kunze et al., 1997). Furthermore, survival of the fittest evidently takes place, for example, in cases of alleles and plasmids with strongly selective advantages, as in the cases of multiple resistance in bacteria and resistance to DDT in many insect species. After pointing out that Darwin knew hardly any cases of natural selection, Mayr asserts (1998, p. 191): "Now, there are hundreds, if not thousands, of well-established proofs, including such well-known instances as insecticide resistance of agricultural pests, antibiotic resistance of bacteria, industrial melanism, the attenuation of the myxomatosis virus in Australia, the sickle-cell gene and other blood genes and malaria, to mention only a few spectacular cases."