Many senior crew I met complained to me that the UFS is a "subtle" means by the company to assess their work performances. They claimed it is used to "jam" or block their promotions and retirement extension. Many felt the junior crew are one "up" on the seniors.
When asked what effect the UFS has on them, the seniors replied " we simply be nice to the juniors so we can get good ratings on the UFS" They claimed the system has caused a drop in senior crew morale as well as the overall in flight service. " No one care about correcting the junior crew these days" one IFS told me. When pressed further, this IFS said with sadness in his eyes..." If we are strict with them, they will rate us poorly on the UFS, so we just close both eyes to the things they do".
Can you imagine if you are the SVP or CEO and the company allows the junior staff to assess you on your work performances? Can you really function well under those circumstances?
The UFS was totally rejected by us during my time. Our SVP then tried to introduce the system but we discouraged him.