Read the context of their comment:

>> It's a typical Russian strategy: gradually increase the intensity of operations, while pretending you have nothing to do with it. That is exactly how war in Ukraine began (way back with the first incursions of "little green men").

> But their [Russia's] problem is that the equivalent weapons factories, refineries etc. often aren't in Ukraine, but in NATO countries supplying Ukraine and giving Ukraine explicit permission to use them against targets inside Russia

That reads exactly like an argument justifying Russia's actions.