Nature has its own rules. If one island full of birds is given to their absolute disposal, why it is might not to be the same with Bothrops insularis? As they say “all creatures, great and small” have the right for existence. The island is these snakes’ home, and the strangers are not welcomed there.
But if you are barefaced enough to visit Snake Island without the owners’ invitation –you must be either a nut, or a poacher, but not a scientist.