Those type of connectors were found in gaming consoles from the 80s and 90s. They were designed to withstand abuse and probably thousands of insertion cycles, definitely not in the tens. Imagine if the user had 100 games in their collection and could only use them once because the connector outlived its limited lifespan.
Good luck finding one that lasts as long as those though.
I only have experience with PCIe and can tell you those CEM slots don’t last very long. Fortunately I’m not the one who has to fork 50K for a new prototype motherboard when something silly like this goes out