Ok, I understand if that is your opinion. Throwing out random d3 and random jumps is probably not a good idea in any competitive environment though, no matter what character you play. As for random leaps, they will also get punished by good players.
I guess in a more casual environment many things that are not advised by a more serious standpoint, will get thrown out generally but it doesn't mean that's what you are supposed to do. Cheetah's neutral is not the best (some say she doesn't have neutral) so casual players will do random stuff to get in, since they don't know what else to do. Cheetah's gameplan is pretty straight forward in most matchups, so I don't really see how the character itself promotes random gameplay, just because casual players tend to use her in a random fashion.
Any character will be random to a certain degree in the hands of casual players, if there were more good Cheetah players we would probably see more calculated gameplay out of her. For example there is only a handful of well known flash players out there, who make the character look great. Most flashes online though, will also do random RMS and rely on jumpins a lot since on their level of play it's what works. Still doesn't mean flash promotes random gameplay at all.
Except every flash does jp1/JP2 I forgot exact one... but they use it because it's literally a unblockable example
Jip1/2, d12, sonic pound )oh, oh, oh, low, low, oh)
Jip1/2, f2, sonic pound (oh, oh, oh, oh, oh)
Jip1/2, f2, d12, sonic pound (oh, oh, oh, oh, low, low, overhead)
Jip1/2, d1, f2, sonic pound (oh, oh, oh, low, oh, oh
All options safe at -3 or +1 iirc and nobody's guessing right even 25% of the time so you can't compare flash to cheetah because flash is braindead once he's inside