We usually expect the energy to be at peak level in the chorus, but the matter of what “peak level” actually means is open for debate. In most cases, the chorus or drop sections will be the loudest parts of the song, but there are some producers out there who play with our emotions every now and then, and delay that ultimate satisfaction. You might want to go with the approach of creating a very busy pre-chorus that can potentially lead to an even busier chorus, but then leave listeners with a minimalist, stripped-down chorus which somehow counterintuitively hits really hard.
The music business in 2019 has obviously changed immensely from what it was in 1919, but one thing about music hasn’t really changed all that much: It’s still inspirational, motivational, and capable of producing emotional power and beauty. Music itself brings people together, crosses boundaries, and inspires us to be better human beings, and the artists who make it often share their perspectives in the form of statements to the same result.