Every single piece of fiat money printed by any government in the world is tainted/dirty/traces of cocaine.... why should this be any different for bitcoin?
This.
I wouldn't care at all the source of the BTC. If we start this kind of thinking we go in compliance with all governments that are creating tainted-coin-lists and effectively hurting the BTC ecosystem.
Actually I would like to see more people start using wallets such as
Wasabi wallet that have an integrated mixer to constantly shuffle their lower amounts of BTC and thus increasing its
fungibility.
The more "white" BTC gets mixed, the less relevant any hacked / stolen / illegit / politically-sanctioned-donation coins etc. will make a difference.