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.
One point I always find is that the Dash mixing system relies on trusted masternodes to mix, so basically if the nodes are surveillance nodes, then the whole Dash privacy fall appart as well doesn't it?
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...
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).
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?
So it's not just that Monero's privacy scheme is not flawless but actually Dash's privacy is worse.
Monero's privacy was provably broken. Dash's privacy was provably not broken. Whose privacy is worse?
So I'm not saying Dash doesn't have value, but on the privacy front it's not that good.
It's unbroken, so by only possible conclusion it's better than Monero's.
Hey asshole

Please tell us who you wanna "fuck up" at the Dash conferences again. I wanna watch you try and fully enjoy the ensuing hilarity. Please don't act surprised when you hear cuffs clicking at the end of the day.
Oh and next time think twice before announcing murder publicly on the internet. You arrogant Manuro-tards think you're so above it all. Just ask your friend Latapie on how reality has a way of catching up on you.