I wanted to explore this, it seems like it mostly happens in classic rock. I like it because it's like the group delivering a thesis statement for the content of their music or their intended commercial trajectory.

I think it works even better when it's done by a band later into their career, like they're reflecting on the culmination of their work. Can people link me examples? I'd love to see if this has happened more outside of the rock genre

Off the top of my head:

Bad Company (debut album)

Black Sabbath (debut album)

Damn Yankees (debut album)

Blue Öyster Cult (11th album)

Dimmu Borgir (8th album, black metal)

Run the Jewels (debut album, rap)

Eyes of Noctom (debut album, black metal, fun fact: this is Nicholas Cage's son)

Highwaymen (debut album, country)