What are the advantages of the Phoenician alphabet over the writing of Egypt and Mesopotamia?

What are the advantages of the Phoenician alphabet over the writing of Egypt and Mesopotamia? What is the disadvantage of the ancient alphabet?

Phoenician writing provided the basis for many alphabetic scripts in the world, and many scripts today have their roots in Phoenician writing. Advantages of the Phoenician writing over the Egyptian and Mesopotamian writing: ease of writing words, the Phoenician alphabet consists of letters, and not of many drawings and hieroglyphs, as in the Egyptian or Mesopotamian writing. The disadvantages of the Phoenician writing are the absence of vowels in the alphabet, since the alphabet consists only of consonants, which interferes with the understanding of many words in this writing.