Yep, they only tested Ripple algorithm. But now no one use it. Where is Ripple now? Same like other altcoins.
Oh, boy, really? So, where is so popular and powerful Bitcoin right now? Same like the whole market

You are funny, too.

Did I say something good about bitcoin? No. It's just first crypto. That's why price is still very high (more than $6000)
I see a real use-cases only for smart contracts on the ethereum blockchain. This is what developers around the world use every day to create new projects. Everything else is still not needed by anyone.