Something on TV wasn't real: shocker!
And presumably there were some credulous people back in 1977 when they saw R2D2 and C3P0 for the first time? Or others who think that Eastenders depicts "real life"?
Personally I am surprised they had to put someone inside. CGI / deepfake is so good at producing realistic stuff that a completely virtual robot (and probably the whole show) could be whipped up on a render farm.