Some people seem to imagine that, or something very close to it, certainly.
The reality is that they all "work" in the sense of displaying what their instructions tell them to display; how one chooses to use that information is, of course, another matter.
Correct.
Maybe I should say indicators serve no purpose to traders who want to be profitable. You might as well just enter randomly.
That last assumption typically rests on several misleading and inaccurate beliefs, some of which boil down to an often-subconscious (but very deeply held) and flawed assumption that higher win-rates are necessarily and intrinsically more profitable than lower win-rates. In practice, this problem tends to be exacerbated by the reality that those subscribing most firmly to this "theory" are also usually the least willing to examine the evidence to the contrary (Michael Shermer has written a lot about this).
You might be right seriously, but the problem with reduced win rate systems, aside from the fact that trend trading blows, makes you have to take every trade because if you happen to miss a big winner, you're going to have a lot more losses until you get that one big winner again. Moreover, if your win rate sucks that much, your method of entry sucks, which means you might want to examine some things.
Ok listen, if I was playing roulette and could only bet on one number at a time although it paid 100:1, yes I would play all day. Low number but big winners.
Trend trading is the worst, especially considering massive players just average in until it finally goes in their favor. Which is why it has been said there are exactly 3 edges in trading, arbitrage, pairs trading, and big buying power. Oh, HFT possibly.