There's no such thing as too many USB cables since you can never find them when you need them. These USB-C to USB-C cables are more "future proof" since they claim to be able to deliver up to 240W PD fast charging.
Since these are charging cables they're only spec'd at USB 2.0 for data transfer, so they're not suitable for transferring data quickly, use with a dock or monitor etc.
Plus these can be used to "whip dat ass" in an emergency