Can the Book of Changes be regarded as divination?

Sure！ But divination is just one of the methods of the Book of Changes, just to verify whether what you have learned is correct, just like doing problems in mathematics.

Take the Book of Changes and mathematics for example: in primary school, I only knew simple addition and subtraction, just like the eight characters in the Book of Changes I just learned; When I was in middle school, I began to learn to make a square and geometry, and calculate it correctly with formulas, just like using the Book of Changes to calculate hexagrams; In college, I began to study functions, spatial analytic geometry and infinite series. At this time, it is like flexibly applying the Book of Changes to various fields; When you reach the level of an expert in mathematics, you will begin to study the principles and theoretical basis of mathematics, which is like studying the theory of the Book of Changes and reaching a higher level.