Whether it's blockchain, DAG or traditional database, all of them have their own pros and cons. Most cryptocurrency which offer higher TPS or fast-confirmation always have trade-off (cost to run full node, decentralization, security, etc.), which not acceptable for all people.
Quantum Resistance*
DAG DLTs offer a buffer against quantum computing, meaning its
advent would not threaten the security of the system.
Data-structure/database type have no correlation with Quantum Resistant. You probably meant quantum-resistant cryptography.
people here need to take one month and educate them self
1 month? I'd be surprised if they managed to educate them-self on new/foreign topic more than 5 minutes
P.S. stop multi-posting & use edit feature if you have something to say when there's no new reply. People who disagree with you might report your posts.