That must have been written by someone who had some bad experiences with TA himself. In the end, TA is very simple. You buy when a stock is oversold and you sell when a stock is overbought. It comes down to simple basics: leave the market when everyone wants to buy and buy when no one wants to buy.

If you keep TA simple, it's only a helpful tool to determine what the best timing is to get in and get out. That's how I use it.