Once again about supercavity modes (a response to the letter to the editors of Physics–Uspekhi from V V Klimov [Phys. Usp. 62 (10) (2019); Usp. Fiz. Nauk 189 (10) 1131 (2019)] with comments on the review by M V Rybin and M F Limonov “Resonance effects in photonic crystals and metamaterials” [Phys. Usp. 62 (8) 823 (2019); Usp. Fiz. Nauk 189 (8) 881 (2019)])

In this letter, we demonstrate the fallacy of the provisions and conclusions set forth in the letter to the editors of Physics–Uspekhi by V V Klimov [Phys. Usp. 62 (10) 1058 (2019)]. The author discusses the review by M V Rybin and M F Limonov [Phys. Usp. 62 (8) 823 (2019)] and makes a number of conclusions that have nothing to do with the content of the review and the original work on which the review is based. Also, V V Klimov's conclusions contradict well-known data in the literature.