No, actually, he is right. You are kind of missing the point of them.
Especially because the 10 commandments were originally Jewish, and they have different methods than the Christians.
Say a Christian breaks something that's not his. He genuinely wants forgiveness, and God supposedly grants it because Jesus Christ died for everyone's sin. Everything goes back to how it was before.
But the Jews don't believe Jesus Christ died for their sins...
Say a Jew eats non-kosher food for years until every cell in his body is 'tainted' so that it imprisons a Jewish soul (that's the theological explanation for why they eat kosher food). He would have to genuinely repent, and then eat nothing but kosher food to get new cells to replace the tainted ones. 'God' would 'forgive him', but he still has to work to solve the problem...
That's the goal of the ten commandments. The Christians just perverted it all by giving everyone a 'feel sick and go home free for the day' card. Which somehow is supposed to teach mercy, but all it does is leave a lack of self-control.
(yes, these posts need to be moved. Unfortunately, I don't have mod powers in this section.)