Also all of these are minimum requirements. They don't actually imply much, except about the state of technology when the statement was written. Flash has been improving very quickly on all axes.
And yet there are still people who will post about the good old days and the evils of MLC, as if current SSDs were not demonstrably better in every way.
More precisely, endurance and retention become exponentially lower with each additional bit stored per cell, while capacity only increases multiplicatively.
They are better. SLC is improving as much as MLC. The ratio of speed, durability, and capacity is the same between SLC/MLC/TLC, but modern MLC is faster and more durable than 5-year-old SLC.
You are probably writing this from a computer using a TLC SSD. Outside of applications that need extreme latency, pure SLC has almost completely disappeared from the storage world. From materials science to management algorithms, a lot has advanced in flash technology in terms of durability.
It's true that TLC and MLC have for good reason displaced SLC. However, in no way are they even anywhere near the old SLC in durability. ~5 years old SLC literally had 100 times more write endurance (as in, how many times you can rewrite each bit, not total amount of writes in the drive) than typical modern TLC.