First time I’ve seen this sitting behind my shitty VPN. If the frontpage /r/normaldayinrussia posts didn’t make you raise an eyebrow knowing their denying access to people for running a VPN should at least make you second guess.
Get out now, save yourself.
I imagine the idea of it is trying to prevent scraping of the content. It seems like it started a couple months after the 3rd party app debacle. By blocking IPs associated with cloud providers they hope to make it harder to scrape their content like openai did when training chatgpt.