If there was perfect proxy for good people then $BIG_TECH would pay barrow of money for this.
10 years of experience says that person probably have seen a lot of software / projects / decisions and stuff.
Of course you could maintain one system for 10 years and struggle in new environment, but also there's difference between maintaining CRUD app for 10 years vs maintaining Linux kernel
If there was perfect proxy for good people then $BIG_TECH would pay barrow of money for this.
10 years of experience says that person probably have seen a lot of software / projects / decisions and stuff.
Of course you could maintain one system for 10 years and struggle in new environment, but also there's difference between maintaining CRUD app for 10 years vs maintaining Linux kernel