The d dimer is a nonspecific marker that is elevated in some clots. It is also elevated in inflammation, age and for others reasons. It is elevated in most people with covid as well. An elevated d dimer is not diagnostic of clotting by any stretch of the imagination
You forgot cancer.
And you forgot that the Lancet did a meta-study on people bedridden with the coof, showing that 21% or so of them have deep vein thrombosis, as compared to (IIRC) about 3% for other people in hospital beds for awhile; and hip and knee replacement patients are famous for DVT.
Keep waving your hands like the coyote holding up a tiny umbrella to ward off the boulder.