A rather normal correction which always happens in crypto, no need to make a fuss over it since this kind of thing will always happen after price pump.
Whenever bitcoin pumps or dumps by a lot we see alts bleed massively same happened tonight my the value of my entire portfolio got reduced by 18-23%. For the past few pumps and dumps altcoins recovered really quickly hopefully same will happen this time too.
Because many people are too worried when btcs got sudden price change like that whether it is dump or pump and they afraid of missing out the train therefore the money flows out from alts to bitcoin.
Most of people still consider bitcoin as the most worthy crypto therefore abandoning the alts that they previously had faith in.
For those 3 coins, it was a needed correction. Their price were multiplied by folds over the Defi craze. The current bitcoin price is linked to the selling off of coins by the miners but such changes in bitcoin is not a new thing and no one should be surprised of. As someone said "bitcoin is just bitcoining". And as the price of bitcoin moves, many other coins move without a reason mostly because they are traded against bitcoin.