Ethereum is at all time highs. BNB is over all time high. as soon as Ethereum breaks ATH say $4500 other alts will boom.
ETH is now $4500. And this is the good sign that you're telling that it's going to boom. Other alts will but not all of them are going to be.
I wouldn't call this the altseason just yet. I know that we are doing fine, but it is not there yet. The start of it for sure, we have started something, but we are not there yet. You know that alt season starts when you see things not at ATH, because that's good, but not enough, you see alt season starting when it's stupidly high and you question yourself "how is this so high?"
Maybe we're not yet there and it will all start when ETH finally hits $5k. And it's just around and we might just see that any moment soon. As of now, everyone is just going to wait and see how it will go for ETH for this week. If it reaches $5k before the weekend, that might give them a signal that we're already on the altcoin season.