Yes, but this time alts are being dumped harder than before. Myself am holding alts only and I can tell you that I don't like my current balances. So far only LTC is performing well vs BTC, but this was expected.
You should know better from past.
BTC will get in Newspaper headlines and evening news. New horde of people will jump in and start buying BTC. Few weeks latter part of them will start looking around the Cryptospace and will see your altcoins and price of those will double. Happened few times only this year. So just chill out and enjoy the rest of this decade. Not need to do anything really.
I need/must! Day trading and accumulating coins in which I "trust".
That is a perfect way but. What if you sell your favorite coin because you think it will go down for you to buy 20% cheaper and have 20% more of your favorite coins and then it go BUM +200% and never come back. And you are left with empty bag of coin you believed in for past 3 years. All you can do is buy 1/3 of what you had or nothing at all.
I know I would not survive it. So I just put my feet on the table and watch the party doing nothing.