There is nothing wrong with someone buying an asset when the market dips and then selling it when the market is bullish even if the market manages to go higher than where they sell their assets because they have at least earned some profit on their investments, that's the main purpose and if it's achieved, it's all good.
Profit is profit is what's on their mind.
I know that many won't agree to that to sell but that's how you're going to profit. If you don't sell and you hold forever, there's nothing with it as well. To each his own on this market.
You'd miss the buying moment at the lowest? then buy it before it finally pushes to the peak. There are so many stories that we've seen in the past on how they regret it.
And soon, we'd see more stories from both sides again, those that didn't sold during the bull run and those that didn't bought during the dip or bear market.