It is related to retardation force when dropped. That in turn is related to the height at which the drive is dropped and the elasticity/softness/hardness of the surface.
For example, if you drop the drive from 1 meter of height, less than 350G means the floor material must be soft/elastic enough to stop the fall after about 2.8 mm, or more. In other words, a thick carpet, rubber, foam or elastic plastic. Drop the drive on a hard stone/ceramic non-elastic surface and the retardation force, when it hit, will be way higher than 350G. And the drive is likely to break. A soft wood floor that get a 3 mm dent might perhaps be OK.
SD cards are ephemeral. All SD cards. SanDisk SD cards are popular, so that may bias your perception.
There are some SD cards that are better than others. The best cost much more and are often slower. They usually have the word "Endurance" in the model name. Like "Max Endurance" or "Pro Endurance".
There is a very strong correlation between low price and poor endurance. And a slightly weaker correlation between high price and good endurance.
Saving stuff to a SD card is what especially cause it to wear out. Reading stuff is not quite as bad. Heat makes a SD card fail extra fast.
It is good practice to offload photos to a PC, or the cloud, as soon as possible.