Looking back I do not think Hey! Say! JUMP had too much of a presence on Shounen Club for this time frame. I think it seemed like it was a lot more than it was because Yabu Kota and Yaotome Hikaru did not have their roles reduced on the show after debut. So there is still a lot of them but not nearly so much of the rest of the group.
I really wish the current SC episodes where as balanced as these. I know the most recent debuts were all bunched together so it was going to be rather debuted groups heavy, but it has been over a year for all of them and only one group is no longer a regular group for the show. And do not get me started with how HSJ heavy things are on top of that. After Sexy Zone's debut I expected to start seeing the Juniors that are expected to have the best chances for debut start rising like with these post-HSJ episodes but it really has not been the case so much. So watching these episodes just makes me disappointed with the current state of the program.
In this episode I noticed that some fans also had a banner with Ya-Ya-Yah's name on it, so I think it is safe to say that the resulting ban of uchiwa and banners came from the fan backlash for that group being dissolved. It is a bit surprising that Yax3 was pretty much the only group that got such a strong response and not Four Tops when NEWS debuted. Yet with NEWS it was a rather uncertain debut at first unlike with HSJ where it was made much more definite. It makes me wonder if the fact that Junior groups for the Tokyo Juniors are no longer formed as regularly anymore or do not remain for too long comes from Johnny's wanting to make sure they avoid another issue like the Yax3 fan reaction to HSJ's debut.