Yes that's right. The risk is the tradeoff made to allow drivechains to scale better than lightning.
You are wrong to think there is a flaw. Every second layer has tradeoffs. You sound like bsv people that say lightning is "fundementally flawed" because it requires wallets to be hot, or peers to be online to receive, or inbound liquidity.
The fact is all layer twos will have tradeoffs.
