If the seeds could be compromised in the future, there would be immediate panic, and BTC could well collapse and even become worthless.
But so many banks and investment funds have invested in bitcoin, I suppose they've verified that this is unlikely impossible.
It also seems obvious that all the people who know BTC will buy if it dumps (and if they have liquidity to do so).
Like that will ever happen. BTC is already too big to fail. There's millions (if not billions) of dollars invested in it. So it's in developers' (and the community) best interests to keep Bitcoin safe against the latest threats. Last time I've checked, developers were working on a solution against Quantum Computing attacks. If implemented, Bitcoin will be able to remain resilient for a long time.
I'd say Bitcoin losing all of its value is nothing but impossible. It's like saying Gold will become worthless in the future as investors switch to Bitcoin altogether. The "yellow metal" could lose investor appeal by then. But not to a point where it will go all the way down to $0. The same will happen with Bitcoin. It will experience constant declines in market price during the ups and downs (volatility). But it will never go to zero. And going back to $500 is a far-fetched idea, now that BTC is well within six figures. You can bet that once Bitcoin goes all the way down the drain, whales and big institutional firms will buy it up like crazy. This will effectively "pump" market prices back to their original levels. We'll see what happens in the long run.