Patterns are recurring designs, so anti-patterns might merely be non-recurring designs. This isn't necessarily a value judgment.
Case in point: ORM can handle 80% of query plans (patterns). Some, it can't handle. They are not patterns, they are the opposite: unique and non replicable. That doesn't make them bad.
However, I disagree with headline. Just because ORM doesn't handle non pattern situations doesn't make the concept an anti pattern.