DIY stuff is cool and this project definitely is. Just understand the limitations of it and use it in situations where it is safe and logical to do so.
I feel like that's inherit to the term "Do it yourself" and I'm not sure why people feel like they need to explain it every time someone has a DIY project.
Because it is worth discussing what is and isn't good about something? Just blindly saying "cool beans" isn't really a fun discussion at all. And if a topic wasn't meant to be discussed, it shouldn't have been posted to a message board.