Ok so we are talking about the privacy aspect of Dash let's not confuse things here.
So you and that article are claiming that Monero is not quantum resistant, which is nothing new, most coins arent.
Another one completely missing the core point of the article.
Here, just for you, one more time, maybe you'll understand it:
But wait: Aren't all cryptocurrencies done for with the advent of Quantum Computing?
Hardly. Bitcoin and similar cryptocurrencies can safely transition to Quantum resistant encryption without compromising the security of their blockchain because it was transparent from the get go. CryptoNote/Monero however obfuscates its entire blockchain with QC-vulnerable encryption. Anyone with a copy of any CryptoNote blockchain (obviously this is the very nature of a distributed ledger) will be able to retroactively expose every transaction ever done with it. This cannot be mitigated after the fact because it's impossible to prevent someone from retaining an "unpatched" copy of the chain.
That is not the main issue that I have been pointing out.
Besides the probability of breaking cryptonote is very slim even with QC, I have researched this. So these claims are not entirely true.
If you have to "trust" Masternodes in Dash (you don't) then by the same flawed logic you have to "trust" full nodes in Bitcoin. Well do you? You should, I mean, aren't you afraid they might just drop your transaction from the mempool? Oops...
No it's not the same thing. Bitcoin doesn't sell itself as a privacy oriented cryptocurrency, the transactions are already visible on the blockchain so in bitcoin the nodes don't matter from a privacy standpoint.
In Dash you do have to trust the masternodes. If the masternode you are routing throug the transaction is snooping, then that instance is compromized.
And no: Nothing "falls apart" with "surveillance nodes", because you can't possibly amass enough to have any effect on PrivateSend. Read and weep or if you're too lazy, here's a picture with some numbers for you. No one in Dash owns 1000 Masternodes, but even if such an entity existed their chances of tracing a single PrivateSend mixed at 4 rounds is a measly 0.3%. Not even going to mention the chances at 8 rounds. Or the fact that you'd hurt the massive value of your own wealth in Dash by attacking the network you've got that insane amount of skin in (over 330M USD at current prices).
Yes and what is the probability that all 4 nodes are snooping? Remember the masternodes cost a lot of money to setup. And there are allegations that a lot of masternodes are controlled by the dev team.
So in this perspective the privacy of Dash relies solely on a tiny centralized group of masternodes. Which is bad.
Let's also not forget that PrivateSend is going to be completely restructured in Evolution and no longer rely on Masternodes anyway, but hey, why should I burst your bubble of Monero's "superiority" so soon?
That is a step in the right direction.
I have 1 question though. Is the communication between mixing nodes encrypted well? Like with TLS or things like that? Because if it isn't, then say hello to permanent transaction records:
https://en.wikipedia.org/wiki/Utah_Data_CenterAt which point, it's exactly the same problem as with Monero if the Monero blockchain is decrypted by QC.