Yes, they are! The Station Master costume is referencing The Station, a main creator of DLCs.
That shirt was a 'Just for Laughs' joke T-Shirt, referencing the long running mistake in LittleBigPlanet 3 of when you tweaked a Sackbot, the Hook Hat's picture was a square that said "Fix Me Hook Hat".
But around a month ago, it was fixed to the icon of the Hook Hat.
And yes, the forums section is very empty. Probably due to the loads of LittleBigPlanet forums, such as LittleBigForum and Sackinima. I guess some just do not care for this wiki...
I don't know...
But it is always nice to see new incomers to help out this forum!
I am always here if you need some help or assistance!