Well, at the very least Etika and Apollo Legend disprove this. People can have some hope and signal about their desire to end it all in a desperate cry for help. Afterwards, when they see no point in fighting, they just do it. This decision is never easy when you still care about what your family will go through or that maybe nothing is lost and thing are going to get better. But when it happens over and over again, at some point you realize that they aren't going to, furthermore they were always terrible and at that point nothing concerns you anymore, just the way out.
Spoony is different, people who really mean it when they talk about suicide, usually want help, want some other way to deal with it and it's obvious that Spoony just wants to tell "THIS WON'T HELP". Doesn't mean that he can't fully and I mean fully realize his situation and do something stupid. The fucker has no problems with slowly killing himself by his lifestyle.
Jewario and one of his fans committed suicide. He definitely was scarred by these.