The macOS guest on top of macOS host running ARM hardware is not supported officially by parallels.
Today, there are five OS guest options with Parallels:
Windows 10 on ARM Insider Preview
Ubuntu 20.10, 20.04
Fedora Workstation 33-1.2
Debian GNU/Linux 10.7
Kali Linux 2021.1
Only Windows and Linux ...
As I understand your question, you have attempted to install ESXi on Mac hardware that is listed on the VMware HCL, but the installer failed near the end.
You then conclude that this must be because of Big Sur. However, I do not see how Big Sur itself could have anything to do with that, since Big Sur does not run when installing VMware ESXi or when running ...