Hello @Kyle-Hardin-0 ,
You are correct, command history in PowerShell is handled differently starting with PowerShell v5.0 and the introduction of the PSReadline module. This module introduced persistent command history, and is accessed differently. I cover this topic in the "PowerShell Basics for Administrators" series. Here is a link to the specific episode.
https://itpro.tv/course-library/powershell-2017/2017-command-historyaliases/
The course "PowerShell for Administrators" was filmed using PowerShell v4.0. This series will eventually be moved to the legacy courses, but much of the content is still relative.
I agree this could be a point of confusion, and will add something to the show notes or maybe hide that particular episode.
Thanks for bringing this to our attention!!
Mike