Should ghibli images really be tagged with disney when there's no first-party Disney properties in 'em?

In my opinion, definitely not. Disney distributes their titles internationally, but that's useless information as far as tagging goes. Only first-party Disney works and characters should have that tag.

Agreed with EB.

Tagging Ghibli with Disney makes absolutely no sense. That's like tagging rurouni_kenshin with media_blasters, which is patently absurd.