When we observe the commandments of God, we are like unleavened bread, flatbread, called matzot in Hebrew. There’s nothing added, nothing taken out. So we are not to add to God’s commandments, and we are not to treat any traditions we keep on the same level as God’s commandments.
In the Torah reading Bo (“come,” Exodus 10:1–13:16), we learn that matzot gives you life, but it also gives you some affliction and difficulty. God’s mitzvot are the same, they give us life but they also bring some difficulty to life.