Genesis 32:32 reminds us of a custom born of a bodily and memorable encounter: "Therefore, to this day the Israelites do not eat the tendon of the hip...". The question you pose —is Israel perhaps considered complicated?— forces us to look at the reason behind the practice, not just the practice itself. The text does not speak of complexity for its own sake, but of a community marked by a decisive event: the touch on the joint of Jacob's thigh.
At the heart of the narrative is the experience of the man who struggles and receives a physical sign: Jacob, after his struggle with God, is left with a limp that distinguishes him and renames him. That limitation becomes collective memory; the people avoid eating that tendon as a visible sign that something transcendent occurred. Far from being a complicated formality, the prohibition is a tangible way to preserve the story of grace and to acknowledge that Israel's identity comes from an encounter that left a mark.
For us as believers the lesson is pastoral and practical: our wounds, limits, or customs are not necessarily complications that must be eliminated, but reminders of the presence and sovereign action of God. It is not empty legalism, but allowing the memory of the encounter to shape our conduct and our wonder; practices should point to dependence, humility, and worship, not to blaming or excluding those who have scars.
So no, Israel is not "complicated" out of caprice; it is marked by a God who fights, changes, and leaves signs so the people remember. If today you carry a physical, emotional, or spiritual "limp," receive it as evidence of an encounter that shaped you. Walk with the assurance that your marks tell the story of grace and call you to trust: God does not abandon you, He forms you.