That was like 2,5 years ago. 2,5 years is an eternity in crypto, you know that as well. Dash was 4 months old then, now it's 36. Do you think people still care? The more time elapses, the less the inception of Dash will matter - just like in the case of Bitcoin.
If you feel like people would care about an airdrop, I'd recommend forking from that point and going ahead with it - that's the whole point of crypto, you can vote with your hashrate/time/money/masternodes/etc.

Btw, I still don't understand people who criticize bad decisions. It is a normal, human thing to make mistakes, especially in this fast-paced innovative space. If you try to prevent all mistakes you are killing innovation, which is simply not acceptable in crypto. Oh and what you are still fussing about was just an idea, it did not even happen! It came up, was discussed, then Evan said it was a terrible idea himself. It probably would have caused way more harm than positives to the network. I understand that you feel otherwise, it's just that past decisions cannot be changed.

But you have choice now: You can contribute to the current challenges of the project, or focus your efforts somewhere else. Questioning 32 month old decisions is as futile as trying to change blocks with 32 confirmations.