This version in fact is not portable. It writes itself to the Windows registry making it not truly portable. Any restrictions or limitations within the Windows Chrome Policies located in the registry such as managing the browser by administrator will be carried over to this version. Using Windows 11 x64 and Windows 10 x64.
Full disclosure is needed now with these apps that they are not fully portable, rather it gives users the illusion of being portable.
Consider this post a formal bug report
https://portableapps.com/apps/internet/google-chrome-portable-64
That isn't a bug, just a misunderstanding of what portable means, so I've removed your [bug] tag.
Please see What is a portable app? for more info on what we consider portable.
Our apps are fully portable in respect that they do not leave anything behind on the computer on which they are run. Otherwise we do not change the base app's functionality - an app that normally reads from and writes to the registry will still do so, we just ensure that before it starts the expected registry keys are written to the registry (including backing up any keys already in place from a local install), and when the app finishes running the expected registry keys that "belong" to the portabilised version are kept with the portable package to be deployed next time it gets run (including putting those backups from an existing install back where they belong).
If you are looking for apps where the base functionality is changed and they no longer write to the registry, you'd need to look elsewhere.