Alan does read the forum so he might show up here to explain…
When he was part of Endurance Corner there was a similar article which I saved, had a more realistic estimate. “Anyone” is pretty bold.
For people who like to read, video is way too slow (Brent Simmons). Podcasts have the same problem.
So here’s some plain text.
Although the date in the URL shows 2016 I believe the article is from 2011 or so.
https://alancouzens.com/...lan-for-the-realist/
"The vast majority of folks respond to training load quite similarly and most of us have the potential to reach a very high level of fitness. As I suggested in the previous article on athletic types, for 70% of folks, if they do the work, Kona is within reach but setting up your life to do the work is another matter and for many it is far easier to attribute the limiter to genetics than to make the required change.
Merely setting up your life to have the space to fit in five months’ worth of 18-20 hour weeks of training in your Kona build isn’t enough. The realist knows that even with the life space to fit the training and sufficient attention given to recovery, you can’t just get up off the couch and throw down one 18-20 hour training week after another. You also need a fitness “base†to pull this off. So you’ll want to factor in a period of preparatory “training to train†weeks, progressively building up the fitness to tolerate the back to back big weeks that will comprise your Kona build.
Based on my experience, most folks coming in from normal active fitness levels are going to need to both be generally fresh and healthy (that is, come into the hard training unloaded), and have a base fitness of five to six months of preparatory training in the 12-15 hour range to tolerate those 18-20 hour weeks of your “get to Kona†push. If you’re coming from below normal fitness (less than 45 VO2) you’ll probably need another five to six months of preparatory “get in shape†work before even beginning the “train to train†period.
Additionally, we both know that your chances of putting together 20 or more back to back weeks in the 18-20 hour range without recovery isn’t good. You’re going to get tired and need some recovery weeks sprinkled in to your Kona build. In fact, if you manage a ratio of 3:1 loading to recovery weeks in the context of a 9-5 job and family life without getting sick or injured you’ll be doing very well! So that five months of specific training, more realistically becomes six or seven months.
Adding it all up, the realist should be planning for:
Six to 12 months of uninterrupted, consistent “basic training†to get ready to train for the event.
Six to seven months of focused “specific training†directed specifically towards your Kona push.
You need both the fitness and a good day on an appropriate course to pull it off. In other words, you may need to put together more than one of these builds before high fitness and a good day coincide! "
All of this made it clear to me I’d never have time to qualify for Kona 
The general point is the same though - commit to the training and you can do more than you’d think…