I came here expecting new informative posts, however this back and forth is just childish.
For the record, boots more important than a polymer handguard that may lose zero after abuse, because the rifle still works (ironsights and body mounted QMK still hold zero)... a foot injury - not so much.
Yes, it somehow devolved into semantic bickering over the definition of "optional" instead of anything substantive about rifles/boots.
I think it was just really important for him to get the last word. Not worth engaging any further.