We do need zoning laws - only not the stupid ones that exist in some communities. Zoning laws are supposed to ensure that roads, schools, public services, etc. keep pace with population growth. All too often, that doesn't happen.
There are too many examples of stupid zoning laws for me to even try to list them, but my favorites are minimum lot sizes, blocking commercial use anywhere near residences, and encouraging the development of cul-de-sacs instead of street grids.
What planet did you just arrive from? That hasn't been true since the late 50s!
Since then, with the exception of a few areas that had no "planning" until recently, planning was perverted to finding the most effective way to prevent the construction of affordable housing, and specifically to prohibit, by law, building or expanding facilities to keep pace with population growth!
Ever heard of the most moronic of all phrases, "growth-inducing"?
How many examples do you need?
Like the "firemen" of Fahrenheit 451, the planners of today spend their every creative moment finding ways to enforce by law the opposite of what planners did in the first half of the 20th century.
And nobody seems to notice!