I suggest opening an SR.

If GSS claims PowerCLI is not supported without a Developer Support contract, point them to Online Documentation - PowerCLI 12.3.0 User’s Guide - VMware {code}

Thanks LucD,

Looks like those commands cannot be run from within Powershell 7 Core. They're working in regular PowerShell.

That's correct, I forgot.

But PS should tell you that this module is not supported.
Which PowerShell and PowerCLI version are you using?

It turns out it wasn't a version issue after all, whatever the problem was I had to uninstall Powershell and reinstall it, after that I ran the following :

Install-Module -Name VMware.PowerCLI -Force -SkipPublisherCheck -AllowClobber

Only then it started working properly. 

Side note: I'm trying to understand what the benefit of PowerShell 7 Core is. I was under the understanding that the whole point of using PowerShell 7 Core was the interoperability, any logic behind the fact that some of the VMware commands aren't supported?

PSVersion 5.1.22000.832

Some PowerCLI modules are not written by the core PowerCLI Team but by the teams responsible for the product that the module covers. The AutoDeploy module is one of them.
Unfortunately, the AutoDeploy Team doesn't seem to consider PowerCLI a top priority.