Yeah, that last paragraph is important. I’m a professional audio technician, and way too many people will begin with boosts instead of cuts. But cutting is much easier on a technical level, because you’re just lowering the volume of something. Boosting is much more technically complicated, because you’re “adding” signal that doesn’t already exist. So you have to make that signal from something, and that’s much more technically difficult than simply turning the volume down.

Imagine you have a signal coming in at a baseline of 0dB. Cutting 6dB is easy, because you simply let less of the signal pass. But if you want to turn it up 6dB, you need to “create” that 6dB from somewhere, because it doesn’t already exist. You can’t just “turn it up” because it’s already turned all the way up at 0dB.