Is there such a thing as a "Live-USB rot"?

I apologize if this is a weird or dumb qestion but here it goes.

I, like many of you here, commonly utilize live-usbs for either diagnosing issues or to just use an untrusted machine.

My live usb setup is generally DD it to a usb drive, so it looks like this:

root@localhost:~# lsblk /dev/sdb NAME RM SIZE RO TYPE MOUNTPOINT sdb 1 7.5G 0 disk |_sdb1 1 4.6G 0 part /run/archiso/bootmnt

No extra partitions made, write-only in a sense.

Will this live-usb, if I never dd another ISO to it again, rot or wear out due to write-cycles?

Furthermore, if the power was suddenly cut off while ruing in this live enviroment, can I expect any harm to come to the drive? Such as a tool failing to run later, some form of corruption?

Any advice will be greatly apprieciated.

Jason