Again...what is the source of the glass or shrapnel? Was any glass found? I have seen NOTHING definitive that would even suggest where glass may have come from, unless it is revealed that one of the teleprompters was in fact hit. But so far, the teleprompters have been reported as undamaged.
Regardless, glass, bullet, shrapnel, etc...an amateur got 8-10 relatively close range shots off at a SS protected target and probably should have connected. I would like to be able to rely on the FBI Director to provide accurate information to the US Congress...10+ days after the fact and who knows how many man hours of investigation.
The glass theory, unless some evidence comes to light that supports it, degrades the integrity of the person/agency that is reporting it. This is the type of stuff that feeds mistrust in government...and provides wind in the sails for "anti-government" folks. In a sense...they aren't wrong. That's why it matters.
That Trump himself lies and/or is milking the situation, etc, is not material to this conversation...unless of course he is lying about this incident. But no facts have been made public that suggests that he is. Imagine if we didn't have many videos of the situation...I am not sure that the crack staff of the SS and FBI would "know" anything yet. Pathetic.