Isn't AMD's encrypted memory meant more for the case of someone with physical access aggressively cooling a running system, then cutting power and removing the

Isn't AMD's encrypted memory meant more for the case of someone with physical access aggressively cooling a running system, then cutting power and removing the chilled memory for analysis (which will preserve contents much longer when cold than at normal temperatures)? The case of an attack on the SSH Agent would take place within the CPU, perhaps even in the same core on a separate HT/SMT thread, where the memory would be cleartext.