Yes, they're going there:
Jesus H. Christ. Yes it will stoke "concerns" if you are an idiot. Or a beltway insider. Normal people understand that a big program takes time to roll out and that postponing certain pieces of it doesn't mean the rest of it isn't ready. it's called prioritizing and the vaunted "private sector" does it all the time. But sure, go ahead and adopt the "some say" attitude and pretend that you aren't actually aiding and abetting those who are hostile to the program.
Also too: nobody is really "concerned" that the law is not ready. The people who keep saying that want it to fail and they aren't hiding that fact. Apparently, Politico is rooting for them.