When women need a haircut, why don't they just tie their hair in a ponytail and snip snip until the ponytail is short?

I cut my own hair during lockdown. I have really thick, long naturally curly hair so it didn't look too bad. I bought it forward over my head and into a ponytail, then cut it to jaw length, you end up with layers. Much rather spend money on a proper hair cut though and economise on other things.