Those articles are about the Windows Taskbar, not the menu I was talking about. This is what I was trying to clarify in my earlier question, when I asked "Do you mean the File/Edit/View menu bar, or the Dock?"
You insisted at the time that you meant the MENU bar, not the Dock, but now it appears that was incorrect.
This got a little long, but the tl;dr here is that you are confused on terms, and that the thing you say can't be moved on the Mac absolutely can be, and always could be.
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One of the ways in which Win and MacOS are different is that, in MacOS, the File/Edit/View menu is always across the top of the screen, not bound to a specific window. I'm typing this in Firefox. I have several Firefox windows open, but NONE of them have a File menu. The menus for Firefox are across the top of my monitor.
In Windows, by contast, this menu is part of each window spawned by a given application. Most modern Windows programs use the Ribbon style menu, but some older or less-updated tools (e.g., SQL Server Management Studio) use the old-style. If I were doing this post on Firefox on Windows, each of my Firefox windows would have its own File/Edit/View menu.
In both Mac and Windows, this menu is always in this known position -- ie, on a Mac, it's across the top of the screen; on Windows, it's part of the top of each app window. It cannot be moved (to the best of my knowledge).
What YOU are talking about (and what those articles are talking about) is called the Taskbar in Windows. The analogous item in MacOS is the Dock. In both systems, the default location is the bottom of the screen, and in both systems it is possible to change this.
-> In Windows, the Taskbar can be placed on the bottom (default), either side, or across the top of the screen.
-> In MacOS, the Dock can be placed on either side or the bottom; you can't put it on the top of the screen because it would interfere with the aforementioned File/Edit/View menu.
--> In NEITHER OS is it possible to reposition the File/Edit/View menu.