it literally explains what they’re for in the product listing:
These labels aid your warehouse operations.
• Categorize inventory, reorder points, product dating or special instructions.
• Apply these labels to pallets, boxes and shelves for easy identification.
• Easy to write on.
open source software getting backdoored by nefarious committers is not an indictment on closed source software in any way. this was discovered by a microsoft employee due to its effect on cpu usage and its introduction of faults in valgrind, neither of which required the source to discover.
the only thing this proves is that you should never fully trust any external dependencies.