Ok, let's do some explaining.
The last picture was actually drawn by someone in the 'Voltron Crew'.
Most people are going crazy about the fact that Lance is holding the LGBT sign with Shiro, who is now known to be gay- so they think Lance might be Bi like most people conspire.
But I'm just glad that Voltron has so much pride and equality, it's really nice to have a show like this available for all ages.

~ LC-may