I think it is still appropriate. The sentiment behind the feature request is to make it easier/quicker to pin multiple notes. Having the pin icon visible on the status bar makes it easier/quicker to pin multiple notes.
With the pin icon visible, pinning three notes would require three actions, one click per note.
At present, pinning three notes requires more than three actions. Using a hotkey, it requires six actions: selecting the desired note three times, plus hitting the hotkey three times. Using the mouse also requires six actions (clicking the triple dot x3, clicking the pin option x3). That process also suffers from the user having to find an item on a long-ish list.
While I think this request warrants its own thread, in general I agree that it would be useful to customise which icons to appear on the status bar, as discussed in the following thread: