Replacing an SSD is not free, and in most cases it's not easy. Maybe an IT pro can just roll down to the computer store for a new one, put it in their laptop (for free!), and throw a $100+ drive in a drawer without even thinking about warranty, but most people can't. A backup doesn't excuse excessive rates of failure and weird glitches.
Replacing an SSD in a modern Apple laptop is literally impossible. You need to replace the whole dang laptop (or motherboard, whatever they call it these days), which is not something a user can do.
Thank goodness for Backblaze, Time Machine, Carbon Copy Cloner, Drobo and Synology. Maybe I have gone overboard, but I have not lost any data in 12+ years.
The post is about predictability and warnings before a drive dies. The work and cost to replace it doesn't change anyway (since you do replace the drive at the first sign of warnings, right? otherwise what's the point of wanting them?). The only difference is if you get an extra chance to copy the data before you replace the drive - which is no difference at all if you have proper backups.
If we'd be arguing about mean time between failure or total cost of ownership, then it'd be relevant, but this post isn't even claiming that the rates of failure are excessive (compared to what?), just that they are too weird and unpredictable for the author's liking.
