Good point … and one of these things developers do not see in many cases…
The info output is indeed not 100% clear and could leave the user unclear – like in your case.
The info given does not use a direct connection between created partition and the second information about format and mount point.
Also, we are involved in calamares development, it is developed independently from EndeavourOS altogether 
The best way to help make the info better on calamares is to start an issue there.