DeFi is around the corner for btc , sooner or later someone will find a way to make it real , then the real pain will kick in .
You mean like having a sushiswap on the bitcoin blockchain?

If that happens i expect insane fee prices , what happened so far in mempool will look like a fart compared to a nuke .
would that mean bitcoin is destroyed at least temporarily until fees got back under control?
Anyway , it's an interesting time to see how things will evolve .
not for people that don't like paying big fees. they just want fees to go back down to reasonable levels but the problem is there is nothing in the bitcoin protocol that defines what a reasonable fee is. it could be anything.