Geeez another clueless thread by knight. Dude I doubt you have the required IQ to understand this:
https://www.youtube.com/watch?v=8zVzw912wPoAlso notice that this video is outdated already because thanks to Core devs malleability was fixed with segwit so Lightning Network is looking better than ever. Please stop trying to play the #R3KT game, you aren't qualified to debate highly technical stuff otherwise you would be pro-Core and pro-LN.
LN is about developing a routing system that can make these type payment channels interoperable.
These 21 channels just let you open a channel and transact with one person (apparently unidirectionally). That's been in Bitcoin for a long time, but no one ever develops uses for it.
The LN will allow a person to open a channel like this and then send a payment to someone they haven't opened a channel with. In practice, the node the payor opens a channel with will have several channels open and payments will be routed between numerous payment channels until the destination is reached. This could take 10 hops, but it will be super fast because no confirmations.
By 21 adding this, they are simply incrementally building up to the eventual LN. It's a good step. Also, it's a good way to show the need for the LN; once people use this and like it, they will critique it for being limited to payments with only one person.
What's on your link will never scale to the level LN can scale.