AWS C5 instance is still running on KVM, here is the link to EC2 FAQs: https://aws.amazon.com/ec2/faqs/#Nitro_Hypervisor
Q. What is the underlying hypervisor on C5 instances?
C5 instances use a new EC2 hypervisor that is based on core KVM technology.
Thank you, this lecture is on our radar for an update, thanks for letting us know!