These days, parallel processing and sharding are being discussed intensely again, with a bunch of people in the group focusing on testnet incentives and points, and casually guessing whether the mainnet will issue tokens... I actually want to "pause" first.

Stop interacting recklessly, take a step back and see where the money really is: who holds contract permissions, cross-chain bridges, upgrade keys; then pause and review those "tutorials," think clearly about exit strategies—how to withdraw when liquidity is thin, can you still escape if Gas prices spike.
To put it simply, while the excitement is there, the risks are sharply pointed out; I’d rather earn a little less than hand my principal over to luck.