Nintendo is pretty good for putting a solid 1.0 version of their games on the cartridges on release. But on the other hand, the Switch cartridges use NAND memory which means if you aren't popping them into a system to refresh the charge every once in a while, your physical cartridge might not last as long as they keep the servers online so you could download a digital purchase.

I've kinda given up on physical games at this point. I held on for a long time, but the experience is just so bad now. They use the cheapest, flimsiest, most fragile plastic in the cases. You don't get a nice instruction manual anymore. And honestly, keeping a micro SD card in your system that can hold a handful of games is more convenient than having to haul around a bunch of cartridges that can be lost.

I take solace in knowing that if I do still have a working Switch in 20 years and lose access to games I bought a long time ago, hopefully the hackers/pirates will have a method for me to play them again.

> the Switch cartridges use NAND memory which means if you aren't popping them into a system to refresh the charge every once in a while, your physical cartridge might not last as long

You've been paying attention to the wrong sources for information about NAND flash. A new Switch cartridge will have many years of reliable data retention, even just sitting on a shelf. Data retention only starts to become a concern for SSDs that have used up most of their write endurance; a Switch cartridge is mostly treated as ROM and only written to once.

Are you sure those flashes are capable of refreshing?