While the AMD Ryzen 5000 series of CPUs are highly regarded for their impressive performance and efficiency, they are not without their faults. Here is a list of some of the bad things about the Ryzen 5000 series CPUs:

1. Limited availability: Due to high demand, the Ryzen 5000 series CPUs can be difficult to find in stock. This can make it challenging for users who are looking to purchase a new desktop computer.
2. Higher power consumption: The Ryzen 5000 series CPUs have a higher power consumption compared to previous generations of desktop CPUs. This can result in higher electricity bills for users.
3. Higher cost: While the Ryzen 5000 series CPUs offer excellent value for money compared to other CPUs in their class, they are still more expensive than previous generations of desktop CPUs.
4. Limited compatibility with older motherboards: Some older motherboards may not be compatible with the Ryzen 5000 series CPUs, which can make it challenging for users to upgrade their systems.
5. Heat dissipation: Due to their higher performance, the Ryzen 5000 series CPUs can generate more heat compared to previous generations. This can make cooling a more challenging issue for users.

In conclusion, while the AMD Ryzen 5000 series of CPUs offer excellent performance and efficiency, they are not without their faults. Users should consider these issues when deciding whether or not to purchase a Ryzen 5000 series CPU.