I didn't see any mention of 7 year olds in that article, just 5 and 6 year olds at the "initiation" level which is analogous to our "mini mite" level in the states (under 7 years old).
I think you missed the bigger point.
So, there is still the possibility of turning out the next Gretzsky by age seven? The bigger point is that thinking people are realizing the lack of importance that full ice has on development. Even in traditional hot beds of hockey.
I am not missing the bigger point, the fact is many of these kids will be 9 years old before the half ice season is over, not 7. Most mite A kids for this year are already 8. There is a huge difference between a 6 yr old and a 9 yr old. I don't deny that small area games have some value as well but you can't tell me that full ice games for 8 and 9 yr olds have no value. The bigger point (which you have apparently missed) is that USA Hockey and the local associations are mandating a long term development plan so they can have a better chance of picking the best 24 guys at 18 and up and beating Canada without any consideration for what parents of 7, 8, and 9 year olds and those kids actually want. What about the kids that just want to play A/B hockey and aren't gunning for the USNTDP and the NHL? Who the hell cares if they play full ice if that is what they want? Why do you even care?
A kid can play one year of Mite level inhouse at 8 and then play full ice Squirt B at 9 but a kid that started inhouse mini mites at 4, mites at 5, travel track 2 at 6 and track 1 at 7 isn't ready for ANY full ice at 8? Many of these kids have been playing in full ice spring tournaments against the best of their age group in places like Chicago (won Chitown Shuffle), Toronto (lost in OT to the Toronto Bulldogs in semis of a Brick Series tournament), and Minnesota (won the MN Brick Series tournament).
In my son's baseball little league there is a 6 year old playing Minors with 9 and 10 year olds and nobody cares because he is a hell of a player. He even pitches. Nobody is trying to say that because of his age he should still be hitting off of a tee ONLY. And this is a league that regularly sends it's all star teams to regionals and states, it is a very competitive league.
Just like anywhere else in life, these zero tolerance like zero exception rules are almost always a bad idea.