Satoshi made it perfectly clear in several posts that he wanted VISA-scale scaling on-chain, and the limit was temporary.
Satoshi's role(s) predated the point at which (big-B) Bitcoin-the-currency and (small-b) bitcoin-the-technology bifurcated. It is crucially important to read his Holy Words in that context. His Holy Comments on dot.bit/Namecoin ("Piling every proof-of-work quorum system in the world into one dataset doesn't scale.") are instrumental in such an exercise.
LN is complex and too late, and unanswered questions remain about how decentralised its servers will be.
You are assuming condemnatory facts not in evidence (a discourtesy you most pointedly do not extend to IBLT vaporware).
1MB will cripple Bitcoin.
You are assuming condemnatory facts not in evidence (a discourtesy you most pointedly do not extend to IBLT vaporware).
IBLT is so powerful that it can squeeze a 100MB new block announcement into 1MB, the size in use today. It is also less work overall than LN or SC. i.e. simplest.
You are assuming exculpatory facts not in evidence (a courtesy you most pointedly extend solely to IBLT vaporware).