Will bed risers work on a platform bed without legs?

Reviewers consistently warn that legless platform beds and some metal frames don't sit securely in standard recessed risers. Oversized models with wide trapezoid or L-shape tops (HANIHUA, ANNKUT) are the ones reviewers recommend for thicker legs or footed center supports, but for fully legless platforms, r/DIY threads suggest a custom wood solution instead.