There seems to be a serious amount of astroturfing going on here there's no other way to explain all these "every 10k transaction generates a SAR... all these things might be harmless, maybe some startup needed some cash liquidity..."

First these are 2000 SARs over a period of 8 years, so if SARs get filled very often (I have no idea if they do), then this would be a very select few of them. Maybe someone already did a selection based on the specific activity?!

Second this is $2 Tn in 2000 transactions I leave it as an excersise to calculate how much on average that is, but you can be assured this is not some random person buying. I would wager that most nation states very rarely move that amount of money around.