Fluent readers decode unfamiliar words, but the 7,000 or so most used ones they read as whole words by sight, as all readers of these posts do.
For as long as children need to stop and work out the correct sound for oo, ow, a and many others, as in 'boot - foot', 'how slow', 'many aprons', they are not fluent.
The ultimate aim of all reading instruction is to be able to recognise and pronounce those words as wholes, as we do in speech, without hesitation. A bit like learning to put names to faces. Learning them all by tedious phonic sounding out is certainly not the only route.
After a few weeks of phonics, my children and now their children all discovered that a far more fun way of doing so was by reading and re-reading some of their favourite books, like the Dr Seuss ones (with a lot of encouragement from me) and they all were / are among the best readers in their classes.
Phonics is ok to start with, but some children need very little of it for learning to read.
It's more essential for learning to write, but still very insufficient for learning to spell the likes of 'any, many, said, head, friend, leopard'.
Masha Bell