This simply isn’t true at all and I have no idea why you would even make that up. Pine is the most diverse family of conifers with over 800 different species, many of which are used in a variety of cuisine and teas. I’ve been chewing on white pine needles all my life as they’re known to be rich in vitamins and help reduce dehydration.
Then there’s the fact that almost all species of pine produce edible nuts. The species that produce the largest nuts are cultivated for commercial sale which is why you can find pine nuts in high end grocery stores and fine cuisine.
I think you’re confusing the hemlock tree https://en.m.wikipedia.org/wiki/Tsuga
With poison hemlock https://en.m.wikipedia.org/wiki/Conium_maculatum
The tree makes the best bedtime tea I’ve ever had. The herb is a common poison notorious for killing Socrates. You’re still technically accurate, but they’re very different plants.