I thought most Apple NVME or SSD storage/boot drives were Samsung's?
They used to use Samsung SSDs years ago. Now it's mostly WD and Kioxia, which was formerly called Toshiba. Samsung is a massively large company. Their revenue from SSD sales to Apple or Mac users is just a drop in the ocean. There's no incentive for them to fix their firmware to make it work with Macs that use APFS.
Where Samsung made revenue in 2020:
Of these four segments, selling NVMe SSDs is responsible for just a small amount of total their total revenue. Smart phones and telecom equipment are the biggest money makers. They do dominate SSD sales for Windows PCs over all other SSD storage manufacturers. By a wide margin. Just look at the best sellers on Newegg and Amazon. Windows runs on around 75% of all desktop computers in the world.
Has 4 major Operating Segments:
IT & Mobile Communications: Sells information and communication products such as smartphones and telecom equipment for 4G /5G networks.
Semiconductors: Produces and sells DRAM and NAND flash memory chips, system large scale integrated circuit (LSI) products, application processors, and image sensors.
Consumer Electronics: manufactures and sells televisions (TVs), air conditioners, refrigerators, and other appliances.
Display panels: Sells LCD displays and OLED displays used for TVs, notebooks, smartphones, and other products.