Solana was basically a vacuum that could be filled to facilitate malcious activities post SBF. You could argue this could be done on any chain, but Sol was tossed away like trash after FTX and was ripe for the picking, as it basically required no infrastructural costs and costed pennies to operate. No surprise that criminal opportunists latched on knowing they could make gargantuan sums. It wasn't something they built or nurtured. Why would they care. I'm not saying good things can't happen there in the future, but now we have multiple massive blows to the industry due to malicious behavior on this specific chain.