Just like those KO's of Tessier, Ahunanya, Donald, Chambers, Estrada, Firtha, Chagaev, Huck, Wlad, Wach, Rudenko, Hammer, Joshua, Hughie and Hunter. And avoiding Ortiz. He did beat Whyte and Takam in wars though, which means he beats Wilder and everyone else of course.
Wilder has no future in boxing. The losses to Fury destroyed him mentally and he's been checked out ever since. He literally said "If I had to lose to anyone it would be him, he was just so nice bro, I'd lose to Parker another 1000 times." The man is sick and shouldn't be boxing. It's a joke that Parker didn't stop him. But credit to Parker for taking and winning the fight that Joshua did not.
Is it impressive that Povetkin didn't drop or KO any of them? I could show you a better list of 15 from Wilder's record as it stands, starting with Fury, Fury, Fury, Ortiz, Ortiz, Parker. https://www.boxingforum24.com/threads/is-povetkin-overrated.713095/
Is it impressive that about three-quarters of the guys Wilder stopped in his career were complete no-names?
At least Wilder KO'd all of his no-names. The first 32 (which includes Firtha, who Povetkin did not stop) all got taken out inside 4 rounds.