They’ve been visited by a few groups since the late 1700s.
Various gifts were left in their possession; often left on shore.
At least a couple of them did die after meeting foreigners.
And yes, a few people who did try to visit them did not survive first contact.
If they have no natural immunity to the diseases we are resistant to, then contacting them will destroy them all, just like happened to many Native Americans when the explorers brough diseases like chicken pox and small pox.
Completely wiped out whole tribes in horrible deaths.