SkyPL

You missed the core of what he was saying: "but is slow and inefficient compared to centralized databases". PoS being nowhere near as awful than PoW doesn't change the fact that it's laughably inefficient compared to the centralized or even distributed databases.

1. I'm not talking about relational databases
2. Blockchain is a type of a distributed immutable database. It's immutability is a huge issue and one of the prime reasons (along with a laughably bad performance) for why it's not used outside of the crypto world or people trying to profit off VC funds being blindly thrown at anything-blockchain. There's a reason why immutable databases are such a rarity in the IT world, and blockchain makes immutability only more computationally expensive, slower to query (not to mention that it makes some queries infeasible) and slower to write. But ultimately it's just yet another data store (see: JSON that Ethereum blockchain stores) with built-in features that are as much of a strength as they are a weakness. It's a compromise built on top of a compromise.

You argued that "PoS on the other hand relies on native coins being staked (locked) on validator nodes, and has minimal energy usage" - but it's simply not true. It has a huge energy overhead compared to the (non-relational) non-blockchain databases.

I think skepticism is justified, giving just how spatially and temporally located this disorder is.

Also note that the person doing this AMA is implying to be a therapist while in reality she's a licensed clinical social worker, it's not really adding to the credibility of the discussion.

It wouldn't be a country. According to international treaties no country can make a claim on a moon or planetary body (such as Mars)

I wouldn't be so pessimistic about commercial use. While currently we don't know how to use them to earn €€€ - it doesn't mean we won't be able to. When theory of relativity was formulated we didn't know how to earn money of it either, yet just 100 years later we have economies addicted to GPS ;).