So much victim blaming, terrible.
I'm sure the guy was well-meaning, but he must've known what he was getting into and yet did this anyway.
The Sentinelise can't be blamed for this. They were merely defending themselves. And even if we somehow disregard the biological hazard, you need to understand their mentality, formed by hundreds of years of isolation.
If we really want to make flawed comparisons between them and our world, I noted many Americans are very big on the idea of being able to defend one's household and property against trespassers. It's not that diffrent.
Here's another issue: the Indian government has recognized Sentilese people right to run their home island as they see fit, undisturbed. The guy deciding to enter their territory anyway was no diffrent than someone trying to cross a closed, guarded border.
The people who should be held responsible are the fishermen who ferried him into the island. They certainly knew the risk, but did it anyway. If you see a man standing at the cliff, you don't give him a push. You pull him away from the brink.