Sometimes most traders think maximizing lots of strategies will results in quick actions but it differs, yes a profitable market depends on a good strategy in as much as you can be consistent in it. And clearly sticking to a particular strategy doesn't seem profitable in the long run as things tends to change this is more reason one get to hold on to different strategies while working with one.
They don't have patience because they want to get results quickly and big, but actually the more consistent you are with just one strategy, the greater the chance of getting consistent profits, even if it's not big.
I'm not the kind of trader who advocates for anyone, it's good you do whatever you want to do. But I tell you, as I won't condemn a single strategy used, I am certain that anyone using a strategy is not yet a real trader. Such a trader will miss a whole lot of reasons why the market acted in a way. But this movement is easily detected by other strategies.
Aside from that, one strategy will not do all the work of Trendline, Daily pivotal breakout, Price action, Overbought/oversold, Wave theories, Retracement detection, and many more. One strategy is for starters, take it or leave it.