He is objectively wrong considering Astralis was ranked the best team in 2020 (According to HLTV) with 4 different stand-ins. (Jugi, Snappi, Es3tag and Bubzkji). Astralis was also a consistent tier 1 team without Device in 2021. Imagine if you took S1mple away from NAVI, i would bet my left nut they don't remain a tier one team if they replaced him with a 5th man rifler.
In 2016 Gla1ve qualified himself as a stand-in with Astralis for the major play-offs. Even Zonic was playing as a stand-in and only narrowly lost to VP.
Astralis have been a consistent top team for 5-6 years with Gla1ve at the helm.
Karrigan Failed with the same Astralis roster, his "Super-team" in faze won a good amount of tier 1 events but could never win the biggest ones and ultimately kicked him. Mouz was a big success but never get anywhere near Astralis. They won 3 tier 2 events that Astralis didn't participate in and one tier 1 event. Don't even mention the Envy project. Karrigan signs with face in february 2021 and would only become a serious contender in february 2022 when they sign their 4rth top 20 player.
Karrigan is a great IGl. But he can never create a legacy team like Gla1ve did.