Sylent0o
A multiplier that you are actively pretending it's stronger than it is. Most champions HAVE to buy % pen item 2nd or 3rd so the armor and mr and so much worse than hp.
Hence why overgrowth and scaling hp rune has been on the rise
About half of Yorick's common matchups don't get % pen from their kit or common item buys. Additionally, the durability being placed into armor/mr is resistant to %hp damage, which several of Yorick's matchups have.
I'm not saying it's strictly a buff, but there's also a really severe negativity bias here.