.

Pluto isn't a planet because it hasn't cleared its orbit as there are massive objects within its orbit (in this case, Neptune).

that is actually the main point of those in defense of pluto being a planet, as if it is round that means it has enough mass to hold that shape, meaning it could very well qualify as a planet.

Wait, really?!?

yes

Not really, it still doesn't have enough mass to clear it's orbit

not many rocky planets actually have enough mass to clear a pluto-like orbit

The others do

mars couldn't clear a gas giant

But they ain't no gas giants near it

nevertheless, it still cannot
by your standards it is not a planet