I think when Zksync and Layerzero finally do their airdrop the result will be the same. There are way too many people participating in these airdrops that the reward is going to be nil.
Sure UNI and BLUR and ARB were very successful but these airdrops Gained so much attention that everybody is doing it with 100 different wallets. So their everyone will be labeled as Sybil or the airdrop reward will be very small.
I do think that when Zksync and Layerzero announce their airdrop; there will be little criticisms and also the airdrop will follow the arbitrum pattern; where everyone got rewards once they are eligible (even if you made just a single transaction on the arbitrum airdrop).
I remember with NFT that already distributed by zksync team. I don't know whether this NFT will be useful in being eligible for the airdrop or not. Making a single transaction in arbitrum airdrop will not make you eligible caused by you need at least to earn three points.
People should have some transactions and bridging eth to the arbitrum to be eligible for the airdrop.
For zksync, the airdrop will be rather straight forward; for layerzero; they have so many platforms and it is unsure yet which of them will be used for the criterias. but still i trust both zksync and layerzero to be more transparent in their approaches just like ARBITRUM.
The thing that i know if zksync already confirmed to have token in supporting the decentralization for its network but i don't know about layer zero.
There's no clue regarding layer zero token. I remember some twitter accounts were hyping it caused by they have found something from layer zero github but it's not even related to the layer zero token.