In the video, he says it would be about 1.1mil in today's dollars (today = date of interview), so I read that as being inflation adjusted, not stock returns adjusted and not his net worth in 2018.
If I recall correctly, he earns around 400k/yr from this website, so his net worth would most likely come under the "shitload of money" level, and not 1.1mil
If you're doing it out of interest whether it would have worked so far, you need an extra column "Inflation adjusted balance" because 1.1mil today doesn't tell you anything about your purchasing power compared to the start date.
I just checked and
$1,119,724 / ((1.025)^15) = $773,130
So his inflation adjusted worth has increased in this example.
The problem comes in of course that this ignores sequence of returns.
Try it with S&P or US total stock market returns for each of those years (you need to find total returns, not share market price), and it would be more realistic - and very interesting - with the GFC in there!