In conclusion, front-running essentially precludes static auctions auctions where the bidders simultaneously submit just one bid) and the transparency of smart contracts precludes auctions with a second-price payment rule (be it static or dynamic; i.e., with multiple rounds of bidding).
Thanks for reporting the issues with the blog posts @HugoTrentesaux
It is not possible to make edit suggestions to the Polkadot blog. Will bring this to the attention of the team that administers the content on the blog posts.