Apparently, bikes are so hard to learn to ride that someone had to invent a bike that doesn't want to tip over when you try to ride it.
I suppose it's obvious that the prospective buyer could simply buy a cheap kids' bike and slap on some training wheels if Little Missy or Toughguy Junior is terrified, or their parents are terrified.
Probably this helps ego salving, there's no Visual Stigma of Training Wheel Use to handicap Blossoming Ego's fitness for the task of learning to ride a bike.
Such precious little snowflakes. We can't possibly subject them to a skinned knee/elbow, and the ego blow of having to use training wheels could turn Little Missy into a harridan adult, or Toughguy Junior into a Macdonald Triad case.