Looking for a job in the same city, many companies describe their positions basically the same. Why?

I think the general situation is like this:

Or some companies have no need for recruitment at all and only advertise. Anyway, they are not sincere in recruiting people who are too lazy to write their own job descriptions and copy them from others.

Either the person in charge of recruitment in the company is lazy or unprofessional, and he doesn't understand the specific work situation of this position, thinking about the same thing and copying others'.