Dwight Yoakam -- There's Something Familiar About That Taylor Swift Song

Dwight Yoakam has a funny way of complimenting Taylor Swift ... 'cause even though country music icon did say Taylor's music qualifies as country -- he also kinda slammed the content of her songs. .

Yoakam was in a good mood when our photog spotted him at LAX yesterday ... and we hit him with the big Swift question: Is she a genuine country artist?

Dwight gave Taylor props, but when we asked him to name his favorite song by her ... he dropped a pretty funny diss -- in a charming country sorta way.