What happened the last time Bitcoin surged? Didn't investors sell off? I heard a theory that when bitcoin investors sell off, they still don't want to cash out because of the IRS question so they move the money into alt-coins. Should we expect an alt-coin surge?
not everyone lives in US to have to deal with IRS nonsense.
not everyone wants to evade taxes

also you have to cash out eventually, people never keep their money in for eternity, they will cash out at least something.
what will happen is that most altcoins will continue going down, some come back up and even have pumps but the rest will do a little dead cat bounce and continue going down because they can not keep the fake pump-demand they had during their good times.