The pictures you have shown so far come from Phoenix canariensis, a variety of palm trees that are grown only for ornamental reasons.
Their fruits, although not toxic, are NOT considered to be edible. They have no pulp: basically, it's just like a chunk of wood.
The edible date-Palm is usually not so good looking: their stipes (=trunk) are slenderer, and their leaves more yellowish.
Once again, there are approximately 2600 different species of palm trees, not counting the varieties. Some are edible, but the the vast majority produces non-edible fruits, fruits that have poor or non-existent nutritive value, at least for humans. Some species are even TOXIC (especially those from the semi-desertic areas of Asia and Australasia).