The double standard accusation comes from assuming good faith on the part of Namecheap.

Since I am assuming Namecheap is being truthful, the double standard is that many countries have committed far worse war crimes and human rights violations - yet Namecheap seems not to care.

If you aren't assuming good faith, and you think that the reason is actually just that they have employees in Ukraine, then the language on the notice is a lie which could only have been there to get better PR.

Since I assume good faith, I'll interpret it as a double standard instead.