What’s so hard to understand? I understood the original Ten Commandments when I was 9.
Understanding them is not the issue. The issue is that they do not apply any longer, being part of the Law of Moses. The Law of Moses was abolished and replaced by the New Covenant when Christ was crucified. In Matthew 5, Christ revealed the requirements of this new covenant as opposed to the requirements under the Old Covenant. Colossians 2:14 and Ephesians 2:14-16 clearly state that the Old Law was done away with and replaced with the new.
Hence, the flap about the Ten Commandments is absolutely unnecessary.