Doesn't look like a spam attack to me. Maybe Venezuelans moving their hard earned money out one bolivar at a time before it becomes the next Zimbabvian dollar
Could be, given that bitcoin is slowly becoming overhyped in the said country, although that alone isn't an enough reason to justify what has happened on the mempool very recently.
as for the fees of these transactions being low, the reason is because people know nowadays their low fee txs (like 1 s/b) will go through fast enough. for example during spike of today it would have taken a 1 s/b tx 12 hours to confirm in worst case scenario
I'm one of those people who sends 1 s/b transactions even though my client tells me that at best, it will take 30 or so blocks before it confirms (which clearly is, most of the time, wrong). Idk, it just became a habit knowing that I'm really not expecting things to be confirmed in an instant and for me, every satoshi counts
