It's quite simple really. All the users supporting Russia here are from Russia, or have bought into Russian propaganda so deeply that they now have allegiance to Russia over the United States (yes, these are the "patriots", the "back the blue" crowd, the "don't tread on me" crowd, the "these colors don't run" crowd, etc..)

The 4 people opposing Russia and supporting America, are Americans.

That's what they meant by support "your nation."

Russians have been weaponizing fringe conspiracy sites, the chans and Facebook against gullible boomers and the mentally impaired since about 2015. Because it works.