Original post title was:

Until further notice: archive.today/archive.is/archive.ph/... is banned from this community for apparently being a Russian DDOS tool

And linked to the /c/ukraine community which posted it.

Also, from the Ars story:

Patokallio wasn’t able to determine who runs Archive.today but mentioned apparent aliases such as “Denis Petrov” and “Masha Rabinovich,” and described evidence that the site is operated by someone from Russia.

The reason it matters:

It makes people suspect of anything hosted in Russia, which is frustrating because there's a lot of valuable shit hosted there by people who are not necessarily from there, such as Alexandra Elbakyan founder of Sci-Hub, who has had many accusations tossed her way due to her websites association with Russia:

In December 2019, The Washington Post reported that Elbakyan was under investigation by the US Justice Department for suspected ties to Russia's military intelligence arm, the GRU, to steal U.S. military secrets from defense contractors. Elbakyan has denied this, saying that Sci-Hub "is not in any way directly affiliated with Russian or some other country's intelligence," but noting that "of course, there could be some indirect help. The same as with donations, anyone can send them; they are completely anonymous, so I do not know who exactly is donating to Sci-Hub. There could be some help that I'm simply unaware of. I can only add that I write all of Sci-Hub code and design myself and I'm doing the server's configuration."

We cannot take for granted that one of the reasons we have access to a large amount of archived information on the internet is often because of unsavory countries who refuse to play by the US governments copyright rules.

We also cannot take for granted how connections with those countries are used to delegitimize people providing valuable services. Bypass Paywalls Clean in particular has had a litany of people assume it's untrustworthy because of its current hosting situation because they don't know the history of it and how it's been kicked off of every other public repository that was stateside.

The archive.today person fucked things up and gave people more ammunition to claim that anything and everything associated with Russian internet is untrustworthy.