No one is saying you're a fool, the thread title invites constructive criticism. What they are saying is true, it's better to feed the plant plain water at the end of it's life for a cleanse than to stress it with a full flush. Flushes are generally reserved for emergencies, like when you measure nutes over the plants and spill some (well, I've done it Stones slap) The plants will more than likely fare better and grow bigger buds with the cleanse.
Also, there are people on here that have been growing for 40+ years that learn new things all the time. There is no reason to be defensive here, we're all in it together to grow bigger better pot.:smokebuds: