You make good points. But from what I remember, "Russia" (I put that in scare quotes because I do not know what Russian entity was behind this) bought 100 thousand dollars worth of Facebook ads. By contrast, the Clinton campaign spent $132 million. That's enough to make me skeptical as to the extent of Russian influence.

I'm only half-joking here, but if these Russians were able to undermine the 2016 election's integrity, spending that pittance, either Trump or Biden would have hired these political science geniuses for 2020.

My understand is that their efforts were mainly meant to sow political discord. If you ask me, what they learned is that we don't need their help with that.