Lightning tx are trustless. They are not some idiotic trusted 3rd party solution like Dash's Masternodes.
On-chain scaling is the most secure thing one could do (here you have the biggest hardware + energy investors = miners behind) and we need this first or at least parallel to all the other triggy scalings on top.
LN *is* Bitcoin, so it uses the same amount of energy for security.
Is Lightning Bitcoin?
Yes. You pick a peer and after some setup, create a bitcoin transaction to fund the lightning channel; itll then take another transaction to close it and release your funds. You and your peer always hold a bitcoin transaction to get your funds whenever you want: just broadcast to the blockchain like normal. In other words, you and your peer create a shared account, and then use Lightning to securely negotiate who gets how much from that shared account, without waiting for the bitcoin blockchain.
See? Lightning is 100% Bitcoin. It's just a clever way to efficiently arrange blockchain writes, yielding massive gains in effective TPS.
'On-chain scaling is the most secure thing one could do (here you have the biggest hardware + energy investors = miners behind) and we need this first or at least parallel to all the other triggy scalings on top. '
I'll let you play with LN in LitecoiN - so you have time for self-education.