I don't see your problem with this. It says that if you had a two shot vaccination then you do not need a Booster to avoid the test. If you only had 1 shot, like the J&J, then you'd need a Booster. Pretty simple to understand.
Obviously it's not so simple since your statement about J&J is totally wrong.
Today, in correspondence with Minister Ottley, the Minister of VSA (Ministry of Public Health, Social Development and Labor) he confirmed after a direct question that the Johnson & Johnson single shot vaccine qualifies as fully vaccinated and does not require a booster under the new rules.
After March 1st 2022, if you have had the single shot Johnson & Johnson vaccine than you will not require a Covid test in order to travel to Sint Maarten. Booster or no booster, under the new rules no Covid test required.
** As always, Sint Maarten can change things if the situation surrounding Covid changes.
If anyone wants public, written confirmation than I can point them to it on the web.
