It is actually not good for Bitcoin when these merchants start to use 3rd party payment processors to accept Bitcoin in their businesses, because they are actually not accepting Bitcoin in reality. This move shows us that there are still problems that needs to be solved, before these companies would be willing to accept Bitcoin directly.
that is only partly bad not all bad.
in the end they are accepting bitcoin payments which means now people who own bitcoin can start spending their bitcoin in a lot more real places in the "offline world" and that helps adoption by a lot. also it gets us one rather big step closer to the mass adoption.
Yes. This is still a stepping stone for bitcoin to be finally accepted by all merchants in the future. Maybe for now only few of the big names of merchants are now accepting bitcoin but hopefully in the next years, more and more big and small merchants are ready to accept bitcoin as a mode of payment.