Paypal is a big company and I don't it will scam it's customers that easily. Besides that we should not judge a company like Paypal that soon.
We should wait until the service announced is ready to be implemented in production. May be there are future developments planned which will allow users to deposit/withdraw bitcoins.
To be honest, describing Paypal as a scam is too harsh on them for now.
This is not about the scamming issue(assuming that they are not capable of doing it) but this all about unclear services they offered.
You can deposit in Bitcoin but can't withdraw it, but you can spend it buying other stuff which is a trick that we ever don't like it. This PayPal had no longer be a part of crypot if this is only a thing they can do. That was not people had been expecting for PayPal but just like to see the same with other exchangers.
This is a way about that traders will just ignore Paypal.