Here's an interesting article from Consumer Reports that details the Rock N Play and it's development history, safety concerns etc. They seem pretty outraged the product even exists, but one thing I haven't heard anyone bring up is this: if each year around 3500 SIDS deaths are reported in US, that means that over the course of the 10 years in which these 32 Rock N Play related deaths took place, the remaining 34,968 or so deaths had nothing to do with Rock N Plays. Considering how many millions of these products must have been sold in that decade seems like they are actually pretty safe. Without knowing sales numbers its hard to say, but I wonder how many SIDS deaths occur in traditional cribs in terms of a market share percentage.
https://www.consumerreports.org/recalls/fisher-price-rock-n-play-sleeper-should-be-recalled-consumer-reports-says/