I ride like that every day on roads with narrow lanes, or intersection issues that make it safer to ride near the center of the lane. It's not "hogging" the lane if it's not safe for drivers to pass you within the same lane or if it's unsafe to ride farther right.
Some of the roads I use have wide lanes (14' or more) or wide paved shoulders where I can ride far enough right for drivers to pass without changing lanes. I do that as a courtesy when I find it safe enough to do so.
But it's true that a lot of cyclists ride at the rightmost edge of the pavement no matter what, and then wonder why they get passed at very close distance by drivers trying to squeeze by in too little room, or get right hooked at intersections. That's why it's helpful for more experienced cyclists to share their observations about how they can reduce these problems by operating differently.