The inability to define multi-tag searches (intersections) on Pocket is ... one of many gripes I have with that so-called tool.

Article roach motel is more like it. Though the roaches can escape via bitrot, and often do.

See the comment I made to the sibling comment.

For a tl;dr, you can use the following to find files that have more than one tag:

    find -L tags/tag1 tags/tag2 -xtype l | sort | uniq -d

The lesson here is that being able to use command-line tools makes up for perceived limitations of the filesystem model.

Edit: After testing, I found the following works great:

    find -L tags/tag1 tags/tag2 -xtype l | xargs readlink -f | sort | uniq -d