No, only vapid pop music follows that one-hit-wonder blueprint. In almost every other genre the expectation is that a great album will be consistently great.
Sorry that you know of only ten decent bands, when there are actually tens of thousands of artists that never add filler to their albums.
Some artists have one piece that is great for a wide audience and all of their other stuff is only for select listeners.(aka one hit wonders)
If you only listened to people who release consistently good music - you'd listen to 10 artists in total(or something like that).