Recently, a bunch of people have been scared by the terms "data availability / ordering / finality," but really, just focus on one main thread: whether the "on-chain results" you see can be reviewed, reconciled, or overturned.

Data availability = can others access the raw data to verify you;
Ordering = who has the authority to decide the sequence (queue jumping is the easiest way to cause trouble);
Finality = how many minutes it takes for this transaction to be truly finalized.
In simple terms: can it be checked, who controls the ordering, and whether it can be changed.
Airdrop season now involves points + anti-Sybil measures, and the degenerate traders are competing like it's a job.
I think the only thing that really matters in the end is a probability issue—don't treat "completing tasks" as destiny.
Anyway, when I evaluate projects, I first look at this main thread; other flowery words are just for listening.