The legal situation with VPNs and traveling between regions is the same as with any internet service.
[1] https://steamcommunity.com/groups/foruncut/discussions/17/41... [2] https://steamcommunity.com/groups/foruncut/discussions/17/39...
Do I mind that MDMA Date With Hitler was taken down ? No, I don't believe it's a massive loss. However, the way it was done, through payment providers threatening to shut off access to the entire payment system because of their rules, is incredibly dangerous to the whole world.
Or the content was never supported by Steam, per their policy. You can check Wayback machine for support for my position. Dod you have any evidence of Steam's motive otherwise?
Given that fact we have two options: either they decided to change their approach to content moderation and remove games that previously passed all their checks, with these games being coincidentally the same that were requested by Mastercard; or they decided to remove every game requested by Mastercard regardless of Steam's own policies.