I think many people are going to be disappointed with the performance of altcoins, this is not the same market as 2017, yes the altcoin season during that year was impressive and it seems a great deal of people are waiting for a similar thing to happen now but I do not see it.
We need to think why the market is going up now? What has caused the current bull market? And there are two underlying reasons, the first was the huge amount of money governments are printing due to the pandemic and the second are the institutional investors buying bitcoin to protect themselves, neither of those two factors have any relationship with altcoins, which means an altcoin season will not even appear and if it does it will be way weaker than what we saw back then.
Everyone is now disappointed as most of those hodlings are top altcoins which doesn't even take a bullish rally like previous alt season and it takes more time than what's expected by community. BTW, it's just mini-alt season because altcoin dominance isn't surged yet and bitcoin's still on the bullish rally.
Onething which i know about alt season is, alt season is happened by those users who invest on shitcoins and hype the alt market and as a result, we see a major movement on every altcoins as those users won't research before investing into any projects and new in this markets to do mistakes just like those who did that type of think back in 2018. Already, more users are doing that and some shitcoins are doing huge bullish rally recently. So, there is a major possibilty of a huge alt season, IMHO.
It seems to me that people are never really going to learn their lesson, we know that altcoins can go up in value and can give you profits if you are able to time the moment you invest in them correctly but that is very close to gambling and if you're going to do that you might as well just gamble, at least you're going to get some entertainment out of it if you do that.
It seems that the 2017 experience they went through with altcoins was not enough, they lost most of their money and instead of just accepting that fact and adopt bitcoin and keep holding their coins they decided that they want to get their money back and they knew that it will not be possible to do so with bitcoin and they decided to invest in altcoins once again, unfortunately most people are going to get the same results they got back then.