Hello @Hans_ter_Horst, welcome to the forums.
This has been an issue for many years, I’ve brought it up myself many times and pointed out to Zwift staff that it is confusing. Unfortunately, no one seems to be bothered enough to fix it. I believe they are currently overhauling the workout menus and trying to get rid of the legacy menus from the old homescreen… maybe they will finally address this? @Charlie_CC, care to comment?