What Andy posted works out to be ~300/250/50 for protein,carbs, and fat + a cheat meal so the average macros are a bit different for the entire week. It's a really good starting place for most people, but if you won't even try to measure or comply it won't do anything. My template is eerily close to this and I've gotten pretty decent results from it...
Why wouldn't it be serious advice?
Depends on whether you want to gain weight or lose it?
This shit isn't difficult or complex. The hardest part about a diet is doing it, not coming up with the magical combo of macronutrients.