The whole scene is fictitious, so the good points above might be "pointless"!?!?
What bothers me a little is the weathering of the M577! It's way too heavy IMHO! Paint flaking is not probable in this case! Sand (storms?) can erode, but not "take off" whole corners, and surely not on the inside of the hatch!!
Such salt/hairspray-like damage is likely only when corrosion comes into play! The trouble is....the M113 family is aluminium based, not steel!
And the IDF has sometimes a certain "laissez-faire, laissez-aller" attitude, but when it comes to their weaponry/gear, they won't tolerate such negligence.
None of Israel's wars lasted long enough to produce such damage...and inbetween wars they care for their weaponry, just like their egyptian counterparts! I've seen egyptian tanks in forward positions (towards Suez) and they were not derelict!
Cheers
Romain