He finished in 2:58:24, which is faster than the previous "ratified record" of 3:02:41. However, the true record is held by Benjamin Pachev, a prolific Croc runner who has documented runs of sub 15:00 for 5K and 1:06 for the Half Marathon, both in Crocs.
Pachev was wearing Crocs when he ran 2:31 at the Monumental Marathon in Indianapolis in 2019. I know this because he beat me in that race by 3 minutes. He has potentially run even faster than that that I am unaware of.
The Youtuber, Chris Howett, may not know that he missed the world record by over 1 minute per mile, since Pachev's time was never ratified by Guinness, but nevertheless, Pachev deserves justice (and Howett does not deserved the 1M+ views on his video).