I think they were designed based on what would make the easiest toy design for changing fashion choices.
It was somehow confirmed by the ugly giant boots worn by almost every character from the first movie. Luckily, the first corrections were made pretty quickly, and the first character who ditched the boots even got her personal intro video
.
That brofist at 1:08 reminds me another video
. I think the
EqG creators have definitely watched it, at least once.