Please note that these claims are false.
You can actually find the explanations here: <a href="https://web.archive.org/web/20210727224547/https://serpentsec.1337.cx/i-was-asked-to-review-an-article-from" rel="nofollow noreferrer">https://web.archive.org/web/20210727224547/https://serpentse...</a> and here: <a href="https://www.reddit.com/r/ProtonMail/comments/14demhj/debunking_proton_and_ciansa_fake_news/" rel="nofollow noreferrer">https://www.reddit.com/r/ProtonMail/comments/14demhj/debunki...</a>. We have in fact several times attempted to reach the author and clarify the points in question, but haven't heard back.