The first thing that came to mind after reading the Op content was the topic. The topic is not correct and if I will rename the topic, I would say "If Not bitcoin, Don't Invest". Now with this what Op said is coherent with the topic but with the one he name they are not.
Coming to altcoins, well some of the investors believe in diversification of investment but we need to be careful of which of the altcoins we are investing on. As the Op said some are there to siphon our investment funds. And the only trusted cryptocurrency is bitcoin.