“I need to invest in better water filtration.”
Coffee is 97% water, so the water you use is important. But it's also the most ridiculous thing on which you could spend several hundred dollars.
“There's no substitute for a good conical burr grinder.”
It's true! Grinding is incredibly important! But buying a grinder that costs as much as a used Toyota Camry is basically the coffee nerd equivalent of lifting your truck tires.
“I don't know why everyone wouldn't use an AeroPress.”
An AeroPress is a cheap, quick, and easy way to make a very good cup of coffee at home. But everyone doesn't use it because of this guy called Mr. Coffee. And because most people think an AeroPress is a fancy exercise they do in CrossFit.