MWJB We know nothing wrong if people enjoy coffee with milk.
My wife can never have a black - either as an Americano or as a brew., however nice the cup is.
A contrast is my daughter loves a long black as long as it is not so fruity. She thinks the pour overs / brews always give her the best cup than an Americano; because, the scope for malfunction is greater in espresso than in brews, IMO.
I like Lattes but as you say milk can easily hide the brews / espressos malfunctions. I like a long black from brews or a short black from espresso and also straight espressos to enjoy the flavours a bag is expected to bring out. But, this isn’t for every one. 😊