That's how it is for every ARMY I guess. I'm just saying that if their main singles weren't as good as they are, many people probably wouldn't have given their albums a listen to discover more gems from their discography.
Because I am kinda like that. If I don't like a main single, I rarely listen to the album. If I hadn't liked 'Boy With Luv' & 'Fake Love', I most probably wouldn't have listened 'LY : Tear' which became my favourite BTS album which lead to me stanning them.
I think the same happens with casual listeners or radio listeners. For anyone to be your fan, you have to listen the songs other than main singles. Because more often than not main singles are that for commercial purposes and songs on the album show what artists really want to express with the album.
Do you actually listen to songs in album order like that? When I discovered BTS, Spotify was already a thing and I just chose to listen to the most played songs! The songs spanned several albums, so I only got to know each album after that. It is true that I decided to deep dive into the albums that had the songs I liked the most first though.