Some altcoins stand on their own, they don't rely on Bitcoin,
Well, that sounds like an interesting scenario to be covered by your flowers but I'm not sure it's correct.
if it will going to drop that low then lets admit that the crypto is a nonsense and will die together with bitcoin because what is altcoin if there is no Bitcoin around?
and also don't worry mate , those people that ask about this kind of questions are those people that don't really trust crypto specially bitcoin instead they are just those kind of people here that target getting money with fast result.
bitcoin will never bring good return to those not trust this for long term.
I don't think this will be happening, but say that it happens, well weak coins will likely go obsolete and then others will be priced in the cents but then again this is super discounted and demand will certainly push price up which will see bitcoin market price go up and allow other altcoins to ride this wave and price will go up supper quick.
they will gone for sure , bitcoin will never go that low and bitcoin will remain the best crypto ever the world has.