I wouldn't call it altcoin season yet because a lot of them are running into serious resistance. If altcoins can get past their resistance levels and make higher highs, the Bitcoin market cap dominance will drop under 60% quick.
The only bought altcoin that I currently hold is Ether, which I bought back when Bitcoin was crashing below $4k. I will only cash out a portion if Ether breaks through 0.04BTC, but currently we're far away from reaching there.
I'm sure that when I do my best and search for BCH/BSV on some older wallets they must be there, so I'll dump these first because there isn't anything I like about them and it's free money at the end of the day.