Can be considered. But we need to understand more about how entropy is bootstrapped during the early boot process. Because entropy is a difficult subject. Even more so in virtual machines.
General good read about entropy:
Excellent writeup by systemd:
After reading above I concluded that flipping the wrong setting could worsen entropy, specifically in VMs.
CONFIG_RANDOM_TRUST_CPU be similar be configured as a kernel parameter or sysctl?
I am asking, because until users machines will automatically re-compile their own kernel could be a long time, if ever, due to an unresolved blocker. See this very post kernel recompilation for better hardening starting from
However, there is one blocker.