Since USE=initramfs specifically pulls in sys-kernel/dracut (via sys-kernel/installkernel), it makes sense that the name of the USE flag should be changed to reflect this instead of implying other initramfs options are available. This would also harmonize with the dracut USE flag on sys-kernel/intsallkernel, allowing users to have 'sys-kernel/* dracut' in their package.use. Reproducible: Always
Gentoo is leaning towards flags named after features they enable, not specific tools used to implement these features.