> HMs in small companies, maybe, in big companies , they dont care, they are paid to bring talent in, they don't get penalized if an employee quits after a year.

Recruiters might be paid to bring people in, but HMs are the ones whose teams these hires typically work for, so being able to do productive things with them is more important than just bringing people in. The cost of retraining, losing institutional knowledge etc, and just the time it takes to bring in a new person are all costs that take away from the actual work of building the product.