Squadron Battle BR nonsense

Anyone else think it’s strange that they decided to do *.3 and then switch to *.7 halway down the line?
I went to look at what’s at 6.7 to see why they’d change it there and it all makes sense. Couldn’t let this particular Gaijin cash cow go to waste, now, could we?
https://wiki.warthunder.com/BI
image