as soon as Ethereum breaks ATH say $4500 other alts will boom.
Don't be surprised that other altcoins will not boom as soon as ETH gets to $4,500 because most of the altcoins are just totally dependent on the capacity of the project owners to also influence their project so that it can gain recognition and follow the trend but when they are not even doing anything to make the project get attention there's no way it will boom, don't be surprised that only a few better altcoins will pump when the market becomes more bullish.
To make matters worse there exist many more altcoins than ever, most of which are useless and should never have been created. I am not only talking about the meme tokens on Solana, I am talking about many layer 1 and layer 2 projects too. Eventually more and more will start going bankrupt and some people may wake up only after losing money.
Ethereum is at all time highs. BNB is over all time high. as soon as Ethereum breaks ATH say $4500 other alts will boom.
The price of ETH and BNB is increasing at a very good rate and seeing their price increase, it seems that the time has come for Altcoins. Now, gradually, the Alts will start doing well and for this, the price of Bitcoin will remain stable and sometimes increase a little. The market is coming in this pattern now. So far, ETH and BNB are doing well, but other potential coins are also going up a bit. ETH has hit $4271 and will hit $4500 very quickly. It seems that we can see something like that within 24 hours. The quick price increase of ETH is indicating this.
Most altcoins are not performing good, and those that existed in the last cycle are often down 90%. So no I don't see the effect that you are talking about. A few days of green activity after being down more than 90% is useless and does not show anything.