@georgetakei as any bad science fiction series (like the new battelstar galactica) production costs are an issue.
So the new star trek has a plot with tribbles taking over the world. At some point the teibbles mutated to be more human like. This avoided all the cost of making the puppets and wiggle them around.
One of those tribbles is US president.
Many thought this was so unrealistic that the popularity of the series tanked.