Most people seem to have overlooked a point TSandM brought up. This isn't 300 dives in one year. This is 300 dives in less than two years.
If the person in question rounds up, it's 300 dives in 1.5 years, but if they don't change to their profile to two years until the two-year anniversary of their certification, they could show in the 300-dive category with basically two years of diving (less some small amount).
So, let's say they've been diving for 100 weeks (which is less than two years), and they claim 300 logged dives. That puts them at a mere 3 logged dives per week, which is hardly outlandish.
If the person in question rounds up, it's 300 dives in 1.5 years, but if they don't change to their profile to two years until the two-year anniversary of their certification, they could show in the 300-dive category with basically two years of diving (less some small amount).
So, let's say they've been diving for 100 weeks (which is less than two years), and they claim 300 logged dives. That puts them at a mere 3 logged dives per week, which is hardly outlandish.