Yes, you are right.
This is what he says
When we teach our child alphabets or phonics at early age, we only confuse them,
And that is because, When you tell them this a or b? your child will ask what does it mean a or b? And well what would be our answer to them? .
Glen gives an eg below
"Well its b because...uhh..because, dont you see its b beacuse ...well, because it was necessary to invent the.... ah.. symbol to... ahh..
and so it would go on. In the end we just give up and might say its b because i am telling you its b"
Hence we would not be able to tell our kids why b is b and why is a is a as we unable to label it with a fact. But by showing words instead of phonics or alphabets we can best relate to them with an object or action. Hence showing a picture of a dog and saying the word dog would make more sense rather than saying d stand for dog or ba mean baa, as this way children relate words with objects which gives a wider vocabulary of reading words insteads of alphabets and phonics
I remember when i was thaught phonics in KG,it confused me, and that time it didnt make sense to me as to why i am learning it.
I guess, it would be best to introduce phonics when your child can read sentences because, your child now understand the relation between words in the form of couplets, phrases, actions, nown etc, hence introducing phonics would now help your child to pronounce and form newer difficult words