“Show support” sounds like you only care about showing the game off to others on your steam profile. you can pirate and still buy merch if have the overwhelming need to not feel morally bad. the devs got paid, denuvo publishers don’t deserve anything.
If they’re charging less in different regions and people were using VPNs to purchase then you’d think that’d be a sign that maybe game prices are too high. They’re selling an identical product at a much cheaper price because the people in some countries are poorer or their currency is garbage compared to USD? Pretty gross to think about.