Yeah, let me know if you're going to sell bitcoin with paypal.
I'll buy everything you got at $1000 / coin.
I promise there won't be any chargebacks.
Well if it turns out that selling Bitcoin is not against the TOS, you may well not be able to do a chargeback, as the transaction would be on the Blockchain as proof that a commodity was sold.
Because you know, nobody ever uses a stolen paypal account/credit card on the internet.
If you do everything according to Paypal rules the above situation is covered. A seller is not responsible for hacked paypal account activity, never was.
Paypal will try to skirt any issue with no compliance, if not with the buyer then with the seller, whatever they can't skirt they will absorb if not big enough to pass on to insurance.