Since scability is not a real issue, the LN doesn't accomplish anything.
If it's not real issue, block size war wouldn't happen and altcoin wouldn't use "scalability" to promote their coin. Besides, LN is suitable for fast & cheap micro-transaction, although most Bitcoiner only HODL.
Changing the rules of the game when the game has already started will always be controversial, so if there was a fork to fix that problem I would believe most people would bet on that fork.
Yes, it's be controversial. But Bitcoin
rule protocol already changed many times through soft fork.