I watched it in a theater and thought it was by far the best Godzilla movie ever made. Like comparing Star Wars to Star Crash
What made the movie for me was the attention to the subtle details that most of the audience would never notice. My mother was there living in post-war Japan, and everything she described matched what was seen on screen - well except for the big radioactive monster.
The Shinden was gorgeous; I caught my eyes fondling the aircraft when it was revealed. They even kept the cockpit roll cage, which would have interfered with the Heinkel ejector seat. Most of the audience probably thought the Shinden was some Marvel MCU multiverse BS, but it and the ejector seat actually existed.
Although I am no ship modeler, one of my friends is a near-fanatical 1/700 IJN ship builder, and the ships in the movie passed his inspection. He had photographic evidence of the English ship names painted on the sides, although we noted the font and spacing of the letters were slightly off.
And finally, the story and characters. The way the narravive played out made me geniuinely care about what happened to the people. When the main chararacter was bearing down on Godzilla, the tension felt like watching Luke on his bombing run back in 1977.
Godzilla Minus One is NOT your grand dad's kaiju flick.