His failure to make the final of the C1 last year - he had won silver in the same event in Beijing four years earlier - gave some credence to that theory but at least there was the considerable consolation of silver in the C2, in tandem with Richard Hounslow.
As he enters another Olympic cycle, the 31 year-old slalom specialist from Aberdeen is intent on trying for double gold again in Rio in three years' time.
Events in Prague over the weekend showed that it is not a foolish dream, as he made history by becoming the first Briton to win the C1 world title and, 24 hours later, became the first man to add the C2 title, again with Hounslow. He even went on to win a bronze for Great Britain in the C2 team event. Florence is a machine.
A Scot simultaneously holding two world titles? Perhaps only Sir Chris Hoy, who lived in the same Edinburgh street as Florence, knows the feeling.
Florence is nothing if not supremely confident in his own ability. An unsuccessful application to the European Space Agency to become an astronaut a few years back has not kept him from aiming for the stars.
He acknowledges that taking on both C1 and C2 was never going to be easy but he sensibly decided against second runs in the heats of both events at the weekend to conserve his energy, knowing he had done enough to qualify for the respective semi-finals.
"One of the difficulties is finding the time to train for them both," Florence explained. "Technically, they are very different and you are either training for, in my case, C1 or for C2, so splitting your training between them is perhaps a bit of a disadvantage. But, at the same time, having two focuses rather than one can actually be good for you, to allow you to step back.
"When you are training in the doubles it allows you to step back a little bit from the singles and vice-versa, and that can be quite refreshing. On race day, obviously you've got more runs to do, so it's more tiring and more physically demanding but sometimes you get a chance to run down the course in one boat before the other which might be a slight advantage. It might just help you know the course a fraction better or gain some more insight into the best way of going about completing the gates."
The double success came at the end of a rather frustrating World Cup year for the Scot, who had posted some fast times at events only to touch gates and pick up penalties that kept him out of the medals. Yet a silver medal at the World Cup final in Bratislava in August - he just missed out on gold - suggested that he would be one to watch in Prague. If anything, 2013 has proved that the sport is wide open and it is down to what you can produce on the day.
"This year, the medals have maybe been more shared, or shared among more people than they sometimes have in the past," Florence said. "That is often the way, even when you have somebody that is very dominant, it's very rare that they show up and win every race.
"Yes it's open, and there are a lot of people who could potentially get on the podium. The competition gets a bit harder every year. There are so many good guys out there all training hard over the winter to try and make gains. It never really takes a step back. So you've just got to be faster every year to even stay with things, let alone make ground on everyone else."
Florence is still coming to terms with being a double world champion after a weekend where everything went right for him. It was not all down to chance, though. He had spent the days leading up to the championships testing the water and it was his third visit to the course this summer as he left as little to chance as he could.
After winning the C1 title, he was determined not to lose his focus as he wanted Hounslow to experience the feeling he had enjoyed 24 hours earlier. His tweet on winning his second gold ("WOW! WOW! WOW!!! Double World Champion!!!) summed it up perfectly.
"It was a very hard course in C1, let alone in C2. Our first run was okay, we got down and managed to rescue it in a few places," he said. "We salvaged the run and it was altogether a pretty decent run. It could have been attempting to change our plan.
"We chose to spin some gates which is the slightly easy option. We stuck to what we thought was a good plan and rather than trying to take on anything too risky we decided to execute that as fast as we could and do a good job of that. It obviously paid off."
Florence cannot decide what is the greater achievement: his two Olympic silver medals or a double gold at the World Championships. Winning two golds in Rio in 2016 would settle that argument.