This subject comes up every so often. Here's a couple of threads that contain some
discussion of it:
https://groups.google.com/g/video-downloadhelper-q-and-a/c/fJxPtaXAygs
https://groups.google.com/g/video-downloadhelper-q-and-a/c/mZQffHc5pFk
Further to an exchange I had with Michel in the second of those threads, I experimented
with making Quick Download my default action. It made no difference. I still couldn't
select multiple entries on the main VDH menu. Shift+MB1 click, Ctrl+MB1 click,
Shift+Ctrl+MB1 click, any combination of modifier keys, didn't matter. As soon as I
click the mouse button, the VDH menu closes. Ctrl, Shift, Alt, separately & in
combination to modify the mouse click make no difference. I can't select multiple
entries on the VDH menu. I have never been able to do this.
In any case, the bulk download feature works in only certain restricted cases, as you can
read in those 2 threads I cite above. Let me add my +1 to your suggestion.