Mainly because they don't really understand crypto and just want their investments to moon. It's like all the people in the Tron telegram chat, every day Tron is hitting $1 or $20 in that chat and they think it's going to overtake everything including ethereum and bitcoin. There's enough money in the world for all of these projects to succeed, it's illogical to want to other projects to fail or decline, but that's what people think it takes for their horse to win.