so everyone accepting paypal is actually not accepting $, or any other fiat currency?
Of course. The currency that they accept is one thing, the means through which they receive the currency is another thing. Last time I checked, Dell USA accepted only dollars, but you could send the dollars in one of several ways: PayPal, credit card, bank wire, old-fashioned checks, -- or BitPay. Likewise, Dell would pay refunds only in dollars, even if you paid with BitPay.
what happens when paypal will integrate btc this year? still nobody accepting bitcoin?
they do accept bitcoin as payment, the just dont hold it.
Either PayPal will do the conversion to dollars and send dollars to the merchant, like BitPay does; or most merchants that accept payment via BitPay will not accept bitcoins through Paypal.
exactly.
for example i want to buy something outside my country:
1. i load up paypal with local currency
2. buy something online in a different currency
3. paypal processes the payment
there is actually no difference at all between what paypal does and bitpay does.
what follows is that merchants are accepting bitcoin and not only $

I think he would argue that the merchant doesn't accept your local currency. It's a matter of terminology really.