Would you be able to send the logs or take a gif of this happening?
The method works by checking the sites for Konoo one-by-one in a cycle. Konoo is representative of where the saltpetre deposit is. Wherever he is, the player will shovel even if to a human there would be a more ideal situation. This is the only effective method to find him as the OSBot API has no way of checking his position unless he is in distance of the player. Alternatively the player could hop worlds with intent of a specific spot being available, but worst case scenario entails the bot hops through the entire list of worlds.
As for walking to the positions of the deposits, the script will generate a new and random path each time using the API. Checking all the different positions might not sound productive to a human, but it is an effective and randomly generated way to find konoo.
From the OSRS wiki:
If you have any alternative ideas of what could make this method more "human-like" feel free to let me know!