Biden could approach and pay respects, but WAS NOT allowed to 'lay' the wreathe
For comparison, here are past presidents, actually elected and recognized by the US military as their commander in chief. Wreathe is presented for the POTUS to lay, rather than already there to begin with.
Here's Trump
And Obama
And Bush
And Clinton
And Reagan
Only Biden was denied the laying. Could approach and pay respects, but not lay it. Aligns with being a foreign dignitary rather than the POTUS.
Coat
Most of them are wearing coats in that video. In fact, would it be possible that they deliberately chose to wear coats so that they had an excuse not to display their medals and badges?
Nah, its a different type of uniform. I think they use the same during Obummers inauguration. Don't quote me on that.
It is January.. Peak winter
The wives are wearing fucking dresses. Stop.