Debates like this are futile, because they take no account of the nature of English spelling, which is only partly phonic.
If English spelling was phonic, children would learn the pronunciations of the following graphemes and would then be able to apply this knowledge to the decoding of all other English words and nobody would dream of using anything but phonics for the teaching of reading:
A, a-e, ay (cat; plate, play) air; ar (car); au, -aw (sauce, saw);
b (bed);
C, ck, k (c/at/ot/ut, crab/ clap, kite/kept, comic, pick, pocket, seek, risk)
Ch, -tch (chat, catch); d (dog);
E (end); ee, --y (eel, funny), er (herb),
F, G, H (fish, garden, house);
I, i-e, -y (ink, bite, by);
J, -dge, -ge (jug, bridge, oblige); L, M, N, ng (lips, man, nose, ring)
O, wa, qua, (pot, want, quarrel), O-e, -o, ol (bone, so; old),
Oi, -oy (coin, toy), Oo (food, good),
Or, -ore, war, quar (order, more, wart, quarter),
Ou, -ow (out, now); P, Qu, R (pin, quick, run),
S, -ce, -cy (sun, face, emergency);
Sh, -tion, -tious, -cial, -cian (shop, station, cautious, facial, musician),
T, -te (tap, delicate), Th (this thing),
U, u-e, -ue (up, cube, cue)
V, -ve, -v- (van, have, river ? no doubling),
W, -x, Y (window, fix, yes);
Z, -se (zip, wise),
-si-, -su- (vision, treasure)
- 8 endings: doable, fatal, single, ordinary, flatten, presence, present, other
and 2 prefixes: decide, invite:
and the consonant doubling rule (bitter - biter)
Those basic graphemes above are frequently disobeyed for spelling (fun photo). Because 69 of them have different pronunciations too, phonics is an essential but not exclusive way of learning to read. Children need to practise word recognition as well:
a: and ? apron, any, father
a-e: came ? camel
ai: wait ? said, plait
al: always ? algebra
-all: tall - shall
are: care - are
au: autumn - laugh, mauve
-ate: to deliberate - a deliberate act
ay: stays - says
cc: success - soccer
ce: centre - celtic
ch: chop ?chorus, choir, chute
cqu: acquire - lacquer 19
e: end ? English
-e: he - the
ea: mean - meant, break
ear: ear ? early, heart, bear
-ee: tree - matinee
e-e: even ? seven, fete
ei: veil - ceiling, eider, their, leisure
eigh: weight - height
eo: people - leopard, leotard
ere: here ? there, were
-et: tablet - chalet
eau: beauty ? beau
- ew: few - sew
- ey: they - monkey
ge: gem - get
gi: ginger - girl
gy: gym ? gynaecologist
ho: house - hour
i: wind ? wind down ski hi-fi
- ine: define ?engine, machine
ie: field - friend, sieve
imb: limb ? climb
ign: signature - sign
mn: amnesia - mnemonic
ost: lost - post
-o: go - do
oa: road - broad
o-e: bone ? done, gone
-oes: toes ? does, shoes
-oll: roll - doll
omb: tombola - bomb, comb, tomb
oo: boot - foot, brooch
-ot: despot - depot
ou: sound - soup, couple
ough: bough - rough, through, trough, though
ought: bought - drought
oul: should - shoulder, mould
our: sour - four, journey
ow: how - low
qu: queen ? bouquet
s: sun ? sure
sc: scent - luscious, molusc
-se: rose - dose
ss: possible - possession
th: this - thing
-ture: picture - mature
u: cup ? push
ui: build ? fruit, ruin
wa: was ? wag
wh: what - who
wo: won - woman, women, womb
wor: word ? worn
x: box - xylophone, anxious
- y-: type - typical
- -y: daddy - apply
z: zip ? azure
The above inconsistencies make learning to read and write English exceptionally difficult. With any difficult skill, there tends to be a higher failure rate than with an easier one. That is why all English-speaking countries have higher literacy failure rates than comparable ones with better spelling systems.
Until this is more widely understood, we will continue to have futile debates about how best to teach children to read and write.
The information I have posted above is head-spinning, but that is what children have to cope with, why learning to read and write English proficiently takes a very long and why many children never manage it.