B-BOMB of 'Block B'

Is B-BOMB of an idol group 'Block B' discriminating against his own members?
Gif image that has been published in the online community of South Korea has attracted the attention of netizens.

Reaction when the Tail cried

(The poor - do not cry ...)

Reaction when P.O cried

(What is this guy? How can you cry you a big guy?)

Image Source: Online Community