I will tell you for free that every altcoins is design in one way or the other to sort for funds from the public. This is the mechanism put in place to make you believe it will yield positive result at the end.
My observation
The owners of altcoins have one thing in mind , to catch out from your invested money on there coins and start up a new business or to support their existing business or to invest the money on bitcoins itself. So it easier for them to pull out the money from the exchanges forcing the price to hit zero.
If they have good mind , they can pump in money later when they have made profit from the business. If the business collapse or target not met, the coins automatically die.
No matter how promising an altcoins can be , bear in mind that the owners has his own reason for creating them which might not be made known on the white paper. If it is not bitcoins , stay away from shit coins with hundreds of empty promises.
Usually that's what majority of the project owners think, but i doubt if everyone has that intention as raw as you have put it to be. Altcoins now are days are filled with scam projects, now we no longer fear if a project will do well or not, the most dreaded part is find a project that has passed all the quality test of a reputable reject yet they yet they're still end up becoming a scam project. Scammers these days are just concerned on how they can make money from crypto by rugging people, however it's best to stay away from those project when you're cannot be certain when to enter or sell your crypto. I've seen coins do their ATH in very small amount of time. So imagine during this time you were sleeping after watching the market for days or throughout the night.