There are still places where the "science of reading" conversation has barely started, and I'm worried that we are talking about "over-teaching" phonics when we're still under-teaching in many classrooms.
How about, "what's optimal and are we doing too much or too little?"
Are kids spending too much time on phonics?
I dunno, but I'd sure like to see some data!
In the meantime, the best evidence suggests kids need a lot more practice with fluency, and that decoding goes far beyond the basics (e.g. how "cat" becomes "education").