Similar to what scholars used to write about Columbus, what they wrote about John Smith simply wasn't accurate. The whole Pocahontas incident never happened. That story was one of many Smith made up in his journals. He also wrote about escapades with multiple, young native girls. None of it really happened.
I gather the local tribes were helpful at first, but eventually became reluctant.
They most definitely did NOT prepare for winter. 80% of the colonists died between 1609 and 1610; mostly from starvation. With all the digging, the colonists did find iron pyrite which they "foolishly" believed was real gold. I'm not sure when they realized it wasn't gold, but they spent all their time digging up the fools gold and loading it onto ships.
Sorry, none of this adds up to Smith being a good leader. Like most of the history we were taught in school, the early historical accounts of the Jamestown Settlement were contrived fiction.
OK, we've drifted here, but this is the Off Topic forum. :-)