I have always said that whilst LN is the only scalable solution it will also need a *minimal* increase in blocksize of the underlaying blockchain more sooner than later.
IF we can agree with that (maybe some people don't agree, it seems) AND unless LN is already around the corner (which it seems it is not).... why not do that small blocksize increase now as a temporary fix for the current network congestion (a fact... whatever the multiple causes including intentional spam) in the meantime?
Because any small increase can be spammed for a small increase of the cost.
We need more competition among miners. If possible, we need it before LN even launches, or at least takes off. Onchain transaction fees will likely increase when LN works at full regimen. In any case, we must make sure that when the would-be spammers want to disrupt LN, they tackle that wall of higher fees without the significant "miner monopoly discount" they have right now.