Escrow in itself is not useless, it's Paypal that is useless for buying bitcoin, anyone can claim being hacked and reverse the transactiona nd the seller will lose the sent bitcoins for good.
Yes you can claim that you got hacked, but paypal is not stupid and they will check a lot of things and they will find out if you really got hacked, and if you did try to scam them you will be limited and permanently banned and you can wait up to 180 days to take out your funds.
I used to sell bitcoins for paypal myself lucky I not got scammed yet but the risk is just too high so i stoped for this.
You can use services like localbitcoins or virwox.com if you really like to sell them
