Uhmm... well, there actually is another explanation, which is that Opera didn't plan or strategize on using bookmarks at all at the outset of its Blink-based browser because it believed most users didn't use/need bookmarks (based on its user 'survey' and its market-target demographics). That explanation is reinforced by a number of official/developer statements along those lines in the early days of New Opera. They thought users would be satisfied by the SpeedDial and Stash features. Now, since Opera has finally included a bookmark bar at least in part because of user outcry, the development of a suitable manager is probably wrapped around the same axle of developing a comprehensive manager for bookmarks, SpeedDial, and Stash... which may be no small task, particularly in the presence of Opera's other priorities.
Opera's user 'survey' and its market-target demographics were wrong if Opera had to finally include a bookmark bar because of user outcry!
It appears to me that Mozilla and Opera are forcing people to use Chrome and IE!! Firefox with its memory leaks even ESR and Opera no bookmark options!!!! Why should their be this big a thread on bookmarks when all they needed was either was an import option or an upgrade option on install of Opera 20+!
This is way too much work to install a simple browser!
I was thinking about installing Opera on our computers at work because of Mozilla's new browser that is one big memory leak, and slows everyone's computer down, there are employees with 100-1000 bookmarks. This leaves us with the only option, Chrome!!
Opera isn't getting it! All they have to do is make their browser bookmark friendly and they can snag a huge chunk of Firefox users!