That issue is not related to bitcoin and as bitcoin is an independent currency from all of the real world affairs so it will not have any affect on the price of bitcoin as you can see till now.
And paxful isnt very well known and popular website, so, there are any reasons to affect bitcoin price. And most important thing as I understand, arrest wasn't related directly to the service and they didn't scamed users.
If this news is really true, i will support the opinion that this will not cause any harm to the price of bitcoin because paxful have other services they provides but only use btc as a means of exchange.