German here. Absolutely true, and has been for many years now. Some examples:
- grade D, poor performance: "We were satisfied with his performance"
- grade C, meh: "We were entirely satisfied with his performance"
- true grade A+: "We were always satisfied to the utmost degree with his performance" plus highly positive and extensive in the rest of the reference letter.
- "was sociable": alcoholic
- "was always striving for a good relationship with colleagues": was gossiping instead of working
- "sociability was appreciated": had sex with colleague
- "was very empathic": had sex with customer
Good to know though, if true.