There in the original comment. A hodgepodge of folks, with Steve Bannon and George Galloway (rather opposite politically, to my take) among the many in the drop box list.
One also observes that Russia could pull the plug on the ".ru" domain anytime, and hasn't. Rather akin to the "Ukrainian" Myrotvorets Research Center ( source: https://myrotvorets.center/ ), which is a domain in Thailand, not Ukraine, though that webpage purports to have offices in "Langley, VA, USA and Warszawa, Polska," according to their splash page.
Among the comments in this thread, one asks for Russian speakers to translate, when in fact the "theins.ru" home page has a prominent "EN" on which to click for the English version. It seems many do not look as closely at sources -- on all sides -- as one can.
While the Latvian domain is registered in Russia, Latvia has its own domain suffix. Source: https://www.nic.lv/en/ This has been available since 1993. So, theins.ru could easily have been theins.lv. The choice was theirs. They wanted to seem "Russian," and publish only in English and Russian. Additionally, that domain name has been registered since 2013, so this is not a recent entity. Some of its commentators are resident in Britain, Ukraine and America (NYC).
This is a strange time, as one sees with Ukraine's new top general, Oleksandr Syrskyi, who has family living in Russia, and echo of times when in our own Revolution, there were loyalists to the crown and rebels within the same families. Ditto in our Civil War. So much on the internet can be closely examined, and not simply taken at face value.
2nd try crashed Firefox.
I tried navigating from the Insider home page, but I found nothing with the word "fakespert" in the article title. Your posting seems to imply that the slurs on Bannon et.al. are in a comment, not Insider editorial material. Which would not be a knock on Insider, anymore than it would be if such were posted on FR.