and It's actually a "feature" of macbooks in general, not this particular one.

I mentioned under another comment:

That A former coworker actually pointed it out to me.

"Ugghh, don't you hate it when you slide your finger across your laptop and it's giving you that buzz?"

I was like "What are you talking about? It's just the brushed aluminum feel?"

He told me to unplug the charger and try again. And Holy moly indeed the buzz stopped.