I have another theory as to why they did that. No way to prove it, this is just a theory, but my guess as to why they added them too was because they didn’t initially have a cloth banner outside during the original iteration’s run. They could then possibly try to prove the case, “Oh see, there’s no way someone couldn’t find the ride entrance. There’s a banner clearly there to show the ride is there”. Rather than during the original’s run when they had that new awning and queue rope installed for Honey, I Shrunk the Audience, that would lead guests to that instead, thinking it was the main entrance or going to the same attraction.
Another thing they added was a clear directionial sign during the 99-01 iteration. Near the entrance, directly pointing out where everything (Journey Into Imagination, ImageWorks, and the Magic Eye Theatre/Honey I Shrunk the Audience) was.