Each time they trot out one of these new robots they strongly imply, if not outright promise, that they will become part of the parks[1], that's the problem. Things like HoloTile are accurately marketed which makes me believe it's a choice they're making with the character robots.

1. The article states "he’s soon making his debut at Disney parks," which is misleading to a casual reader who may not realize that Olaf will only appear on the day of his debut.