Did the Nazca Lines actually work as some kind of landing calendar for seasonal events?

Been down this rabbit hole a few times over the years and honestly the astronomical alignment theory never fully convinced me. Some of the lines do point toward solstice sunrise positions but there's so many of them that you'd almost expect a few to line up by chance alone.

What gets me is the sheer scale. You don't need something that big just for a calendar. Local priests or whoever was running things would've had simpler ways to track seasons. So either it served multiple purposes or the "calendar" angle is a bit of a modern projection onto something we don't fully understand yet.

The water source theory is one I keep coming back to - some researchers reckon the lines map underground aquifers. Could be both things are true. Anyone here looked into Anthony Aveni's work on this? He did proper fieldwork rather than just theorising from satellite images and his conclusions are a lot more cautious than most. Curious what others think.

The astronomical alignment stuff always felt a bit cherry-picked to me - with hundreds of lines going in every direction you'd expect some to point at something significant just by chance. That said, I'm more drawn to the water/irrigation theory personally. The idea that the lines mapped subsurface water sources or drainage patterns makes more practical sense for a desert people than a giant calendar they couldnt even see properly from ground level. Not saying the ritual element wasnt there too, but I doubt it was primarily astronomical.