> The purpose of a fuse is not to blow, but to only blow when dangerous amounts of current flow through the wire they are protecting.
The purpose of these fuses is to blow and serve as write-once storage memory.
> eFuses are a hackish way that System on a Chip makers have created to try and permit patching flawed hardware with questionable firmware.
No, eFuses are literally the only mutable nonvolatile storage that can be implemented inside SoCs in modern silicon processes, because you can't put Flash/EEPROM in them for technical reasons. That is why they are universally used for irreversible configuration actions on every single modern high-performance SoC. You will only find Flash memory in small microcontrollers.
The purpose of these fuses is to blow and serve as write-once storage memory.
> eFuses are a hackish way that System on a Chip makers have created to try and permit patching flawed hardware with questionable firmware.
No, eFuses are literally the only mutable nonvolatile storage that can be implemented inside SoCs in modern silicon processes, because you can't put Flash/EEPROM in them for technical reasons. That is why they are universally used for irreversible configuration actions on every single modern high-performance SoC. You will only find Flash memory in small microcontrollers.