> creating and using single-use wallets, addresses, or accounts, and sending [cryptocurrency] through such wallets, addresses, or accounts through a series of independent transactions
One could argue that's how normal Bitcoin wallets work. The addresses are deterministic based on your passphrase (or derived private key). The addresses don't need to get reused because there's no real value in doing so, and no real cost of just using a new address each time.
Though yes--even if that's the exact meaning and design, presumably one could still use the simpler wallets that DO just reuse the same address over and over. And obviously that'd reduce privacy quite a bit.
What you quoted is regarding the use of a SERIES of single use wallets. What is the "normal Bitcoin" use case for funneling money through a chain of throwaway wallets?
Yes. Single-use addresses protect me. If you store your entire balance under a single address then anybody you transact with can see your entire balance by lookup up the transaction. Single-use addresses protects you from people snooping around looking for worth while $5 wrench attacks.