If they cannot deliver what they promised and they do selective payment to those who participate,, then its a scam, A project that has a good name should have no complaint, and they should address all issues.
Airdrop has a new definition, in the past, you simply sent your address and they would send you their token, Now you have to work for it and based on how you deliver or finish the task, that's how they compute your allocation: simply doing a bounty campaign on the project and not participating in Airdrop.
What I see, Like Dogs is quite fair and not confusing, simple and not too complicated, If in others, for those who have joined to get free coins in the Airdrop campaign bot model or others must still be willing to voluntarily provide or contribute likes and subscribe to increase their Adsense media links and not once or twice they attach to be liked but many not to mention other unimportant links.