These 3rd party payment processors are the new "bitcoin paypal". People should avoid as much is possible to use them for their online shops. Why? For the simple fact that are EXACTLY against the whole idea of Bitcoin. Remember the whitepaper abstract? https://i.postimg.cc/YSpSsXsr/Satoshi-papers-abstract.jpg

Nowadays is quite easy to self-host your own "bitcoin payment processor" or at least control it better.