From the link:
Of these, 62% are pristine, and only 4% are embayed by lava flows. If Venus were subject to current "awesome" volcanism, or if it was even in the fairly recent past, it is hard to explain why only 4% of its surface craters would be embayed. Gads! All those craters on a planet so young. And so little vulcanism to wipe them out!
Funny, the earth, moon, and Mars took their most massive hits 4 billion years ago when there was still a lot of loose debris from the formation of the solar system. You'd almost think Venus is an old, stony-crust planet with exactly the same kind of history.
Not to mention, if the planet were as young as medved claims, meteors large enough to leave some of those craters would have punched clean through to the hot magma underneath resulting in the quick erasure of any crater.