How can exchange public chains break through the "shitcoin" dilemma?

Rug pulls on liquidity pools, token crashes and mining collapses, team information accused of being fabricated, project team mistakes leading to dumping tragedies... Recently, various DeFi project chaos has taken turns playing out on Heco and BSC. When users are "hurt," two public chains initiated by exchanges are also facing criticism, with firepower concentrated on the question "why don't exchanges review projects before they go on-chain?" If this question were changed to "why doesn't Vitalik review projects on Ethereum," it would probably be ridiculous. But when the word "exchange" precedes "public chain," the criticism is sliding toward rationalization in public discourse.