Yeah, this happens with every band with a large enough discography and shifts in sound over time. Depending upon what you focus on, you can group albums differently with disagreement over what the break points should be. I'm partially biased because MP was my first, and I always gravitated towards the albums soon after it more than the ones before, so that baked in my era split for them.
I should finish reading the album countdown thread, coming in the middle of my roulette made me unable to participate or keep up with it.