Are Montessori floor beds actually safe?

Across r/Montessori, r/ScienceBasedParenting, and r/toddlers threads in the candidate signals, the consensus is that floor beds are broadly safe once the room is fully baby-proofed and the child is past the early pull-to-stand phase. Reviewers flag two recurring concerns: entrapment risk with guardrails for very young infants, and the practical reality that toddlers can and will leave the bed at night.