hello there 
Thanks for suggesting, I would like to clear somethings up,
- The youtubers on Java have a custom cape made by the clients like Badlion or Lunar and not the server themselves.
- The 2 capes available in the Marketplace are not made by us but a creation of Minecraft.
- We do support custom capes but only if its a regular cape and not the one with different dimensions or shapes (if you have any such capes then you’ll become a yellow steve also inappropriate capes are not allowed)
-
Unfortunately, we cannot sell/ or distribute capes since it will violate the Terms and Conditions laid by Minecraft for Partnered servers. Source link;- https://account.mojang.com/terms
I hope that answers most of the doubts that were rolling around 