Foolish? He was a missionary. He doesn’t walk to the beat of this world.
Not any more.
What was his official position?
Did he stay on top day-to-day?
He broke Indian law, and those islands belong to India. Plenty of other places he could be a missionary.
This isn't the jungles of Ecuador where native tribes interact and have at least some continuous contact with the outside world. Nobody comes or goes from this island.
These people have quarantined from the outside world for quite literally centuries. Which means that...
Whenever they encounter people from the outside they die.
Not metaphorically.
Not figuratively.
Literally. Their immune systems lack antibodies and helpful bacteria and all the things that keep the modern world from being killed by pathogens we encounter throughout our lives.
The things we survive don't all go away. We neutralize them, and then some of them we still carry around. In fact, some of them our children carry around too, but we pass many of our immunities on to them.
The Andaman tribesmen associate outsiders with dying, and you will note they moved the body to the sea while staying as far away from it as possible.
And every information source I have read about the Andamans in recent years lays all of this out.
This guy was no Jim Elliott by any stretch of the imagination. You are supposed to first do no harm.
How many people could he have lead to Christ after his very presence caused them to start dropping like grasshoppers in a blizzard?
If they hadn’t killed him, he stood a good chance of killing them by bringing disease, way before he could ever learn their language to preach the Gospel.
Im sure that wouldve been a great comfort to those whose children may have died from the diseases to which he would have exposed them.
Read the entire article if you haven't already......

Yes, foolish. He ILLEGALLY went where he was told NOT to go, he landed on the beach, and tried to give them “presents” They tried to kill him. He swam back to the boat, and then the next day...He went back. He committed suicide by Native.
God wants His word spread, but He also said don’t be stupid.