These are absolutely not the same thing
Ninjago is a grounded universe. LEGO fundamentally is just an "artstyle". The fact they are LEGO means nothing to the shows universe
Now if this was something like The LEGO Movie, where it WOULD matter, then yes. Point taken
But its called Lego. Its like taking a show called ninjas and instead everyone is medieval knights. It would be like calling a show werewolves but every single character is a vampire. They can't act surprised with the reaction.