paypal already became an old fashoin method to pay
Old is Gold, you haven't heard that? Paypal is a very old method of payment. but still paypal is primary payment source of millions of peoples and thousands of online companies and marketplaces.
That is right, "old is gold" rule works in this case, because Paypal is pretty much used worldwide, it is fairly easy in use and very transparent.
Also, you cannot suffer from any kind of scams, because paypal is a legit company which is responsible on every transaction. If something will go wrong, you can always make a complaint and retrieve your money lost due to some kind of an issue.
That doesn't work with bitcoin because it is decentralized, and this block size plus the amount of btc needed for fee is too high to even consider bitcoin is better than paypal.