Oh I concur, Silicon Power are not great with RMA or warranty promises.
This happened last month.
I bought a 1TB SSD in October 2024 for ¥7780 on Amazon.jp (about USD48.00 at current price exchange, would have been closer to 60 at the time).
Early March this year I pulled that SSD from a panasonic toughbook to install into a PS4. Got half way though installing Playstation OS and it died. I couldn't see it in disk part (or even BIOS) and not with usb to sata cables. Just dead. So I messaged SP support and they asked for a clear photograph. I sent it. Then they told me that since the drive was manufactured in 2022 the 3 year warranty had expired. I objected and eventually had to get Amazon support to confirm that the warranty starts from my purchase date not the manufactures date. They then wanted to give me a full refund. Which I declined as the price hike made a replacement impossible to purchase.
Anyway I sent it for RMA after a lot of complaining and they sent it back to me again, same argument, was made in 2022 so out of warranty. I complained more and then they said it was an internal miscommunication and to send it back to them AGAIN this time COD for RMA. I did and they finally sent a new 1TB SSD....current price is US$180.49 on Amazon
So yeah if you need a warranty return with these guys be polite, but don't say "whatever" and just give up. Push them.