Not true. When I talk about good coffee I might be talking about coffee I don't personally like. Good coffee means good quality beans, roasted well and used at the right time. If you get coffee from somewhere like Starbucks then they prioritise consistency over flavour. They over-roast their beans because it reduces variability. Lighter roasts retain more of the bean's flavours but there's a smaller window of variables (grind size, brew time, temperature etc) and it's more difficult to get that consistency when you make money by selling in high volume so staff can't take their time. A small, specialist coffee shop will take their time, use beans they have chosen and at the roast level they want, they will dial it in and get the flavour right so they are selling the flavour they want.
Anyone can buy wagyu beef fillet but if you get it cooked by someone in a Michelin star restaurant compared to a whetherspoons then you are going to get a different outcome. The problem with coffee is the whetherspoons standard coffee and the Michelin star standard coffee are being priced the same.
I'm snobby about coffee because I don't want to pay Michelin prices for whetherspoons quality but I'd happily pay the high price for the good stuff and a low price for the rubbish stuff. I drink more instant coffee than anything (despite having several much more expensive ways of making coffee at home) because I don't mind it and it's quick and easy when I'm working from home. I can't be spending 5-10 mins making a flat white or a V60 filter coffee every time I want a coffee.