It’s complicated. A lot of the research is misreported. The supposed study demonstrating that experts can’t tell the difference between red and white wine says no such thing. But people do love a narrative that takes the wind out of a snob’s sails, so the legend persists.

True experts can distinguish an astonishing number of characteristics of wine in a blind taste. Most people are not experts. The price of wine is also largely decoupled from how much any given person will enjoy it. (However, psychologically, you will probably enjoy a bottle you paid $100 for more than one you paid $20 for.)

Basically: Wine is not all just indistinguishable fermented grape juice, but most stuff written about wine is a combination of bunk and rarified trivia no normal drinker should care about. Drink what makes you happy.