With macOS, it is important to eject a drive before disconnecting it, in order to avoid possible data corruption. On Windows, I believe this is optional. On macOS, it's not. If you disconnect a drive without first ejecting it (one way is to drag it to the trash can),
Technically (just to be complete for the OP, there is nothing wrong with your advice), all that needs to be done is "unmount" it which makes macOS close out any open files and transfers. Unmounting applies to media that is not physically ejected, like mounted internal or external SSDs, or disk images. Once dismounted a volume can be physically disconnected safely. But, it's OK to say Eject because that's what it says on the File menu.
Also, although dragging to the trash was the original method, I rarely use it today and the OP should know there are many other ways to do it, some of which are more convenient at different times. You can unmount a volume these ways:
Choose File/Eject in the Finder, or press its shortcut Command-E
In a Finder window, click the eject icon next to the disk's icon in the sidebar
If you enabled right-click for your mouse/trackpad/stylus (yes, often right-click is disabled by default in macOS so you have to go turn it on), right-click the disk and choose Eject.
And of course you can drag a disk icon to the Trash. But I often think that is the most labor-intensive way compared to some of the one-click alternativesabove, so I don't do it that way much any more. I also think it's not intuitive since dragging to Trash does not delete the contents of the disk.
