I have 20+ bookmarks here. If those jump to sidebar and makes it a mile long, and I can’t modify it, I will jump off right away,
No admin can’t tell to me what I need on such trivial case, when deep dive to bookmarks means opening hamburger and one single click 
There is absolut no idea what so ever start building the sidebar somekind centralized link farm of a forum. Or there must be an option to overdrive admin’s (personal…) preferences.