Yes there is! It's often phrased "better late than early"
This is the author & his book
https://www.amazon.com/dp/B00LF3FXXA/re ... TF8&btkr=1It's not something I agree with, but yes, there's a lot of it out there. I know folks who let their kids listen to audio books instead of reading well into the elementary school - and perhaps jr. high - years.
I don't agree - but they're the parents
And, most of the kids DO learn to read eventually.
For Sunday school, I philosophically disagree with requiring reading for 2 reason:
1. it is MUCH more interesting to listen to an accomplished adult read the lesson than another kid - who is either struggling - or racing thru to show how bright they are ; )
2. MOST Sun. School classes have one or two struggling readers - for whatever reason - and I think being required to "read aloud" in front of their peers when they cannot is traumatizing long term. AND it gives kids the mistaken impression that God likes kids best who are good readers