Sorry for this not being clear. Larger airdrop rate means it will take more packs to receive an airdrop. Since each subsequent airdrop normally gets dropped after every 1M packs are sold, that means there are 1M more packs that are eligible. So they increase the drop rate to be larger so the amount airdropped isn't a ridiculous amount.
In my opinion, I could see each subsequent airdrop after these next two increase by 1/100. So that means the fourth airdrop would be 1/400 packs, then fifth would be 1/500, etc...
Hope this helps!
Oh that definitely makes sense. Thank you!!