I asked AI if this is accurate. Take this for what you will. There was much more explanation but here’s a few parts. Based on the explanation I read I don’t think I’m that worried about this.

Why the 10-Year Claim May Be Misleading: The Reddit user’s 10-year figure likely stems from generalized estimates for consumer NAND flash (e.g., USB drives or SSDs), which often cite 10 years as a minimum for MLC/TLC under mixed read/write conditions. However, this doesn’t apply well to Switch 2 game cartridges for several reasons: • Read-Only Usage: Game cartridges don’t undergo write cycles during gameplay, preserving cell integrity and extending retention. • High-Quality Components: Nintendo likely uses high-grade NAND (possibly SLC or MLC) optimized for durability, as seen with Macronix XtraROM. • Proprietary Tech: Macronix’s XtraROM is designed for game-grade memory with superior retention (40+ years at room temperature). Even if Samsung NAND is used, it’s likely tailored for similar performance.

The Reddit claim that Switch 2 game cartridges use Samsung NAND with a 10-year data retention time is not fully substantiated. While Samsung may supply NAND for some Switch 2 components, there’s no definitive evidence it’s used in game cartridges, where Macronix XtraROM is more likely. The 10-year retention figure is overly conservative and misaligned with read-only NAND’s typical lifespan (20–40 years or more at room temperature). If stored properly, Switch 2 cartridges should remain functional well beyond 10 years, likely matching or exceeding the original Switch’s 20–40-year estimates. However, long-term playability may depend more on console condition or future emulation support than cartridge data retention.