...and they can make their own coins. How is it not centralized?
no, they can't. their protocol cannot be changed, therefore no more coins can be created.
ripple is also open sourced, which is completely the opposite of centralized. do your homework.
That just means someone can make a decentralized fork.
Are the coins fixed supply? if not, how are they created? Who's running the majority of nodes? Is adoption organic or driven by a marketing organization?
The site reads like an ICO scam... grand claims, inaccurate data (with respect to other coins), and "BUY NOW" buttons everywhere.