they answer is, they get to tier 10 and dont want to commit till the herd is culled and sit back and fire., so basically you playing in a tier 10 ship with tier 4 mentality and strategy.
Its also a gameplay strategy you can counter if you do it soon enough in the cap but radar is not your friend.
So dont go back to tier 4-5 just play the same way they do at tier 10 except for carriers as the AA is a lot different at tier 10
Tier 6 is the most fun yes.
Tier 7 is also fun if you dont get uptiered as its usually the top tier or should be as then its 8, 9 and 10
This is my public server account so thats why it doesnt show a lot of battles, my normal account is over 7000 battles.