Could anyone explain me why Dash is needed at all?

Is it not just Bitcoin + Lightning Netowork + some Mixing Tool ?

What is the difference between those 2 ?

And Dash is not fungible like Monero, right ?

Why Aren't We Seeing Greater Adoption of Cryptocurrency?
https://youtu.be/zrIul2OGsQE

Published on Jan 23, 2017
Ryan Taylor defines two reasons crypto hasn't gone mainstream yet -- and it may not be the reasons you've been told elsewhere. This is the speech delivered by the Director of Finance of Dash at The North American Bitcoin Conference, 2017.

Learn more by visiting http://dash.org

Original presentation here: https://youtu.be/Tn2s6IHAL4A

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Dash De-anonymization Contest

Icebreaker and other trolleros: I have donated $1 to Monero's development team. I sent 0.25 Dash (TX ID: 59d51690d4b56ddbf1e393fa8d3a49bcfc3247f270f36be3b6ee411802666cba-000) to shapeshift.io, which converted it to Bitcoin and sent it to the official Monero donation address listed at https://getmonero.org/getting-started/donate/.

I challenge you to de-anonymize this transaction. To make it just a little easier, I only used four rounds of Darksend, so it's exponentially less private than it would be with the maximum eight rounds.

Please tell me what address this transaction originated from.

Cheers!