Yep, and if the demand wanes for a while, miners that can't afford to stay in business will die off, leaving more competitive miners in their place. It's always gonna be there.

all evidence to the contrary. you literally just said people were using LN instead. and >90% of people don't self custody anyway. so thats hopium and not predicated on any actual real world usage.

You don't use ln instead of on chain, you use it in addition to onchain because you need 2 transactions to open and then close channels. Idk how many more transactions are taking place on lightning, but I've already zapped or been zapped like 20 times today, when I was averaging 1 transaction per week in 2016 when the blocks were full.