In all post-Soviet countries they will tell you "Nas Mnogo" (lit. "there's a lot of us") is THE Russian strategy. It used to sound scary when we thought manpower is everything. Today, with drones and things like Javelin... Seems more funny than anything else.
No, but it wasn't uncommon to have pro-Putin/pro-Soviet Russians tell you this phrase on the street (I live in CZ) - as an insult/threat, usually the next sentence was something like "Czechia belongs to us too and we will soon return". That's what would sound very funny now, especially if they delivered it in the usual manner (drunk rage).