I find the thought that people in the country music business worry much about formal rhyme schemes a bit absurd. It may of course be quite true, but that doesn't stop it being absurd.

I suppose the idea might be that, if the effect was that successive verses seemed to be rhyming in different ways, it could be felt as clumsy, as if the rhymnes were just being thrown in at at random.   But a verse doing it one way and a chorus or a bridge doing it the other way, I can't see how there'd be any problem there.