Some Apple M1-based Mac mini, MacBook Air and MacBook Pro machines are experiencing extreme SSD wear - NotebookCheck.net News
MacBook Air's superfast disk speeds come from Samsung SSDs | Engadget
How to Upgrade MacBook Air with more Storage | Upgrade 128GB SSD Flash Drive To 256GB - YouTube
Amazon.com: 256GB SSD Hard Drive for Apple MacBook Pro Air 11" 13" 15" A1502 A1398 A1465 A1466 (Late 2013-2015) / OSX Sierra/Mac Pro A1481 : Electronics
M1 Mac RAM and storage can be upgraded after purchase, but it's not easy - 9to5Mac