Recently, I've seen everyone testing the network repeatedly, talking about product experience, but their main concern is whether the mainnet will issue tokens.

Now the group chat is talking about blockchain builders, bundles, and forks, making it seem like if you don't understand, you'll be left behind by the times...
Honestly, retail investors really don't need to push themselves to become semi-researchers.

I think knowing these few levels is enough:
Your transactions are not directly reaching miners/validators, someone is packaging and casually lining them up in the middle;
If you’re randomly posting large amounts/slippage on the chain, it’s like handing the meal directly to others’ mouths;
If you really want to do it, use reliable wallet protections against front-running/private sending (enable if available),
Avoid chasing those “hot topics” with overly optimistic points.
As for the rest—market share of builders, bundle details—look into it if you're interested, but not looking won’t cost you much in getting beaten up.