Russia is a legitimate venue for adult content that is clearly 18+, gated behind an age check and does not fall into the categories on the federal blocklist (homosexual content depicted to minors, content equated with extremism, depictions of suicide). Within those limits Roskomnadzor activity targets specific URLs, not whole platforms. Operators who structure age verification at the edge and respond to specific takedown notices run sustainable platforms.
Network-wise, Moscow peers reach St Petersburg in 8ms, Minsk in 18ms, Kyiv in 22ms (route-policy permitting), and Yandex CDN edges in single-digit ms. For a CIS-focused image hoster, no other location matches that profile.