1. That's because it's true. Creatine is extremely well studied and the studies pretty much all tell you that Creatine is safe, it's great at what we know it's great for, and it turns out it might be good for things we didn't expect. So when people all say "wow it's so amazing" they're right.
2. Because of (1) being so blatantly true, if you want to push some other supplement, it adds a lot of legitimacy to say "Creatine is the number one supplement, but here's something that takes things to the next level". Since the Creatine claim is well supported and you're already marketing to a group that's taking a supplement (Creatine), it is likely good marketing to piggyback on that.
But this doesn't change the fact that Creatine is shockingly well supported as a supplement.
So, "take things to the next level" with some pears and oatmeal and chia seeds! Now I just need a sponsor.
edit: I saw your other comment, if you want to give more information that would be helpful, thanks. https://news.ycombinator.com/item?id=48346947#48347768
I have bad sleep apnea and have totally gotten off of prescription stimulants because of high dose creatine.
Creatine seems to have a strong postive effect on the brain when taken in doses higher than those taken for exercise.
Im not interested at all in creatine for exercise. Just google: "Creatine for sleep deprevation"
And as a vegan you dont get any creatine since you're not eating meat, so your body has to make it itself, which requires a ton of methylation and if you're like me and have bad genes for methylation (google MTHFR gene polymorphism) your body had a hard time with it as it is. So by supplmenting creatine you're reducing burden on your body greatly.
I think a lot of the minmaxed stuff people do working out is mostly placebo because very few people are actually pushing the limits of natural human physiology and hitting some nutrient bottleneck.