Why would your employer do that? Incompetence? Something nefarious?
Regardless, if the IRS pre-filled this for you, then you would have caught it at filing time, which sounds like an improvement, if I’m understanding correctly.
It really depends what the process would be. If I get to approve, appeal, or delay all tax statements before the filing deadline, then this probably is ok. K-1s might not be delivered until after the deadline, resulting in angel investors needing to file an extension every year.
Regardless, if the IRS pre-filled this for you, then you would have caught it at filing time, which sounds like an improvement, if I’m understanding correctly.