Babylon (Babel) was the original kingdom that setup it's opposition to God. It said they were the masters of themselves apart from God. Thats been the point and the theme throughout the bible. Do we trust (have faith in ourselves and our institutions) or do we trust (have faith in God)?
Keep in mind the context of Revelation. It’s a message to seven ancient churches who were facing persecution. It’s an indictment of earthly kingdoms that makes the point that every human kingdom eventually becomes Babylon and must be resisted. The book is filled with visions and images that point to Jesus’ return as the ultimate King, where he will restore his people and usher in the new creation. This promise motivates every generation of believers to remain faithful in the midst of persecution and hardship.