I don't see any Young Earth Creationism espoused in this book. If there's anything that can describe our contemporary Coptic Church opinion on creation, most, if not all clerics believe in an old earth, and they would not have a problem in agreeing with fossil dating methods.
In fact, as I'm skimming through the beginning of this book, it seems that Fr. Tadros does not want to contradict the theory of evolution either. At the same time, he's also trying hard to show some sort of scientific accuracy in Genesis, which is expected from a typical Coptic cleric. Today most Copts, especially those from Egypt (not in the diaspora) take a Bible literalist, anti-evolution view, probably so to answer back at Islam which holds the Koran in the same esteem, not realizing that the ancient Bible exegetes in the Church, some of which were Egyptians, did not take all parts literally and accurately as Copts would want today.
At the same time, Fr. Tadros is a Coptic priest who I respect a lot. There is a lot you can learn and benefit from his writings. So, even if may believe in certain scientific inaccuracies, he is still someone who I believe is a gem in our Church when it comes to spiritual interpretation of Scripture. Fr. Tadros is also someone who loves Origen immensely, and will quote from him a lot. So, perhaps, he would wish one would take his literal tendencies with a grain of salt, as Origen himself believed this is not as important in many areas of the Bible, like Genesis.