Actually it can be avoided, read the OP again and 90% of what others are saying on the thread. By simply resisting the argue to invest in the trending over hyped projects flooding around the industry. Just by doing that you have avoided similar experience other has expressed here.

The reason it seems the altcoins are been hated on is because 99% aren't worth the market capitalization they have and obviously their price doesn't represent their utility to the market. These coins are just been pumps and soon to be dump then new projects are giving attention in order to shill them to create fomo and pump the coins.

We have some altcoins that have done so well in a very short period of time that could be said to be great investment choices but instead of advocating for projects that their future aren't certain and aren't trusted, it's better you promote what we know can restand all the market throws at it, which is Bitcoin.