LN is not a layer 2 solution. its a altnet that many coins can peg to. its not even unique feature just for bitcoin.
its not a solution. its an off ramp to get people to stop using the bitcoin network.

LN cant even guarantee 'payment success'. even one of the most famous advocates of LN recently revealed a over 70% payment fail rate of his routes in the last 3 months. so its not a solution at all. its an alternative network