I don't think anything but a coin with perhaps better technology will kill BTC.
Would you want to buy or destroy such a coin?
I think so too. But BTC will evolve.
Hard forks are politically very difficult. It can't evolve or at least not at a rapid enough pace to defeat an upstart with sufficient brain power.
Afaics thus far such an upstart has not presented itself publicly.
forced evolution is a strange argument, because it only counts if you are seriously interested in the currency/ technology. you were ask to help if you knew a flaw in the technology
Forced evolution could also potentially clear the way for suitable technologies and/or it can reveal which organization is able to adapt to its environment.
For example, yesterday I wrote down a mathematical proof for an innovation that yields a higher than 25% threshold for selfish mining, regardless of the attacker's network advantage. And it doesn't require
unforgeable timestamps.
Please note your confirmation bias. There are numerous possible motivations.