Because they have the sense to know that someone who hasn’t tried it saying it doesn’t work tells them absolutely nothing about whether it actually works, or not.
Saying that you think it is unlikely to work, and therefore don’t feel the need to try it, is perfectly valid. Making an absolute statement that it doesn’t work, when you haven’t tried it, is either just ignorant, or intentionally trying to stir the pot.
There are a multitude of tweaks out there that I have no plans to try, for various reasons, but I can't say with any certainty that they don't work. I can only say that I don't see enough potential benefit to try them.
Saying that you think it is unlikely to work, and therefore don’t feel the need to try it, is perfectly valid. Making an absolute statement that it doesn’t work, when you haven’t tried it, is either just ignorant, or intentionally trying to stir the pot.
There are a multitude of tweaks out there that I have no plans to try, for various reasons, but I can't say with any certainty that they don't work. I can only say that I don't see enough potential benefit to try them.