I have two friends who were let go and both were given this exact reason for termination from HR. Interestingly they were both long-term employees. This line appears to be HR’s go-to line for blanket termination.
If it were me I would want to drill down by asking “Specifically what skills are you referring to?” and “If this is true then why wasn’t it addressed by management previously?”
I’m just wondering if others have heard this line as well.