Honestly I think most managers would rather lose someone with 1 year tenure than 5 years.
One year is plenty of time to make many meaningful contributions, especially if the employee is already experienced. You might not get the super deep knowledge to drive roadmaps and cross team projects. But it's definitely not going to be a net negative unless the employee is just bad (so not likely to make it to a year).
Don't compare the right person staying only one year to the right person staying 3 years. Compre them to no hire, or to the wrong person being hired. Getting amazing people who want to stay with you forever is really rare.
One year is plenty of time to make many meaningful contributions, especially if the employee is already experienced. You might not get the super deep knowledge to drive roadmaps and cross team projects. But it's definitely not going to be a net negative unless the employee is just bad (so not likely to make it to a year).
Don't compare the right person staying only one year to the right person staying 3 years. Compre them to no hire, or to the wrong person being hired. Getting amazing people who want to stay with you forever is really rare.