Is it true that if altcoin season starts many projects will be forced to launch just to take advantage of the green market? There are some projects that failed to launch since 2019 I heard and some said that in 2017 many projects start rushing to take advantage of the market, how true is this?
Yes, that is true. But many projects doesn't mean all project will increase and get the advantage of the bull run.
Maybe the project which is at the top 100 will increase in the altcoin season, but that is only a prediction from people.
You should search for that project by yourself, so you will know what project you should invest in before the price of that coin or token increases.
Many new projects in 2017 rushing to take advantage of the bull run, but that project can not survive after the 2017 moment was the end, and now, that project does not have a chance to increase back.
So you need to be careful to choose the project, make sure that you already research to find the project, and don't use too big money if you don't have much info about that.
You can also get a scam project because the scammers will use that moment to launch their project too.