From Apple’s FCP X FAQ:
Can I hide Events that I am not working on? Yes. You can hide Events in Final Cut Pro X by moving them out of the Final Cut Events folder. In the Finder, navigate to the /Users/username/Movies folder and create a new folder. Then move the Events you are not using out of the Final Cut Events folder and into your new folder. The moved Events will no longer appear in Final Cut Pro X. If your Events are located on an external drive, you can move the Events to a new folder on that drive, or you can simply unmount the drive.
The PR-speak translator says: “Yes, by jumping through hoops”, which reduces to “no, not trivially”, which the hectic schedule of a video editor (five hours daily to edit videos, three to talk about Final Cut Pro) simplifies further to “hell no”.
I am a proponent of “value-added databases”. The filesystem is traditionally a very poor habitat for rapid metadata access. I appreciate the iTunes database, for example, since I wouldn’t want to slog around in the Finder (or waste energy laughing at the people who suggest that I only need to switch to Path Finder or, so help me, some sort of Commander). It gives me “things can be in multiple places at once without messing around with symlinks”. It gives me smart playlists. It gives me track ordering, for heaven’s sake.
However, that all depends on a good implementation of the database, just like the shrewdness of the filesystem depends on the particular filesystem. When Final Cut Pro X remakes iMovie’s mistake of “just listing everything” as if it’s appropriate because it worked in iTunes, it’s a hilarious lack of research or thought (or a recipe of Apple’s annoying “just work through it” tinge). When they offer solutions like these up without promising to fix them, it shows that they’re desperate.
The problem isn’t really that there’s a database of clips, the problem is that it does the wrong things. But by acting as if the problems don’t exist, Apple isn’t doing itself any favors in spreading the pretention that eliminating things that look like folder hierarchies is a worthwhile activity. And if people having to memorize file paths are bad, you just taught them a new one.