Recently, I see everyone is again chasing testnet incentives and accumulating points, then in the group chat they ask every day, "Will the mainnet issue tokens?"

As soon as I hear that, I instinctively want to rewind the timeline.
To put it simply, don’t be scared by terms like data availability, ordering, finality—just focus on one main thread:
The transaction you interact with, who can ultimately prove that it "really happened," and who decides the order of events.

Many collapse cases are not actually technically mysterious, but because you think "it has been confirmed," when in fact it’s just temporarily recorded somewhere, and can be changed at any time;
or the ordering rights are in the hands of a few people, who can put you at the front today and drop you to the back tomorrow.
Anyway, when I look at projects now, I focus on these two things:
Is there a place where others can verify the data, and is finality based on words or signatures from a few people…
No matter how many points you have, don’t get carried away—just start with this.